Our Team

Dree Collopy

Of Counsel

Dree K. Collopy is Of Counsel to Grossman Young & Hammond. She is a U.S. immigration lawyer with nearly two decades of experience and has earned her reputation as a creative, steadfast, and compassionate advocate, capable of handling the most complex matters.

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Sandra Grossman

Partner

Sandra Grossman is a founding partner of Grossman Young & Hammond, a full-service immigration and international human rights law firm in Maryland. She is a skilled practitioner with nearly two decades of experience in a broad range of immigration…

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Becki L. Young

Partner

Becki Young, founding Partner, is a seasoned business immigration attorney with three decades of experience in the field. Becki regularly provides immigration law advice to clients in a broad range of industries, including investment banking and secu…

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Patrick Taurel

Partner

Patrick Taurel is a Partner at Grossman Young & Hammond. He litigates immigration cases in federal court, fights complex removal cases in immigration court, advises criminal defense counsel on the immigration consequences of criminal convictions…

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Denise C. Hammond

Senior Counsel

Denise Hammond, Senior Counsel, has focused exclusively on the practice of immigration law for almost 30 years. She has received numerous accolades from clients and peers for her extraordinary level of personal service, her resourcefulness…

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Anne Rowley

Counsel

Anne Rowley is an immigration attorney who counsels clients on a variety of employment-based visa categories. Anne has over a decade of experience representing foreign nationals and employers in a range of immigrant and nonimmigrant matters.

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Adriana Robinson

Senior Attorney

Adriana Robinson, Senior Attorney, focuses her practice on family-based immigration and removal defense work. She is dedicated to providing the best representation for her clients. Adriana represents individuals before the U.S. Citizenship and Immigr…

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Gianna Borroto

Senior Attorney

Gianna Borroto is a Senior Attorney with over ten years of experience successfully representing clients in complex matters before the immigration courts, U.S. Citizenship and Immigration Services, the Board of Immigration Appeals, federal courts, and U.S. consulates worldwide. She specializes in humanitarian and international protection issues, such as asylum, unaccompanied children’s cases, T and U visas, and removal of INTERPOL Red Notices.

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Catherine Walker

Attorney

Catherine Walker is an immigration attorney with a passion for navigating complex immigration matters. Currently based in Miami, Florida, Catherine has specialized in removal defense for people…

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Juliana Carvajal Yepes

Attorney

Juliana Carvajal Yepes is an Attorney at Grossman Young & Hammond where she represents corporate and individual clients on a broad variety of employment-based and family-based immigration matters…

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Nikki Whetstone

Senior Attorney

Nikki Whetstone is a Senior Attorney at Grossman Young & Hammond where she represents corporate and individual clients on a broad variety of employment-based and family-based immigration matters, including nonimmigrant and immigrant visas…

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Sofia Hassander

Global Immigration Counsel

Sofia Hassander is a Swedish-American immigration lawyer who helps business with the full range of business mobility needs, including H-1B, L-1, E-2, O-1, dependent-related visas, and related consular issues. Sofia has extensive experience with…

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Hallie Cohen

Senior Attorney

Hallie Cohen is a Senior Attorney at Grossman Young & Hammond where her practice focuses on employment-based immigration matters. She counsels clients throughout all stages of the immigration journey, from nonimmigrant classification through naturalization.

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Claudia Cedeño

Attorney

Claudia Cedeño is an Attorney at Grossman Young & Hammond specializing in immigration and international law. She works on family-based immigration, naturalization, and complex inadmissibility waivers and assists clients with the removal of INTERPOL Red Notices, providing a comprehensive and strategic approach to her client’s immigration needs.

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Ariel Rawls

Attorney

Ariel Rawls is an Attorney at Grossman Young & Hammond specializing in immigration and international human rights law. Ariel skillfully assists clients in deleting INTERPOL Red Notices and in navigating complex removal proceedings in immigration court.

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Valerie Mahoney

Attorney

Valerie Mahoney, an Attorney at Grossman Young & Hammond, specializes in a variety of immigration matters encompassing both employment-based and family-based cases.

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Marcela Villeda Sanchinelli

Attorney

Marcela Villeda Sanchinelli is an Attorney at Grossman Young & Hammond with experience in family-based, employment-based, and criminal-immigration matters. Marcela assists clients with challenging persecutory INTERPOL Red Notices, complex inadmissibility waivers, and…

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Lauren Twist

Counsel

Lauren Twist serves as Counsel for Grossman, Young and Hammond, where she assists clients in a variety of industries with nonimmigrant visa matters and permanent residency. Lauren partners with clients to provide…

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Mary E. Pivec

Of Counsel

Mary E. Pivec has counseled employers dealing with government regulations, investigations and enforcement actions. Rated by peers as AV Preeminent in the Martindale Hubble Attorney Survey, Mary is recognized as one of the most experienced and knowledgeable attorneys in the U.S. in the field of immigration-related worksite…

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Sheryl Winarick

Of Counsel

Sheryl Winarick is a U.S. immigration lawyer with over 20 years of professional experience. Sheryl creatively helps individuals, families, businesses and organizations maximize their potential in the U.S.

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Charlie Magri

Of Counsel

Charlie Magri is a seasoned lawyer with 6+ years of experience in INTERPOL-related matters, helping individuals and organizations challenge notices and safeguard rights in international cases.

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Mark Donig

Of Counsel

Mark Donig is a corporate attorney in Washington, DC, whose practice fuses startup law, venture capital, social impact and international commercial relations and diplomacy.

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David Morris

Of Counsel

Based in Washington DC, David Morris has practiced exclusively in immigration law since 1992. For the past 20 years, he has represented foreign investors and regional centers in all aspects of the EB-5 visa…

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Recent Blog Posts

We Love Our Au Pair—Can They Stay?

It’s not uncommon for a host family to form a deep bond with their au pair—and when the program winds down, families often ask, “Is there a way for them to stay?” Before we explore what may be possible, it’s important to understand the legal foundation of the au pair program.

April 23rd, 2025

Webinar: What Restaurant Owners Need to Know about Immigrant Workers in 2025

On Tuesday, April 15th, El Restaurante Magazine hosted a webinar featuring GYH attorneys Becki Young, Mary Pivec, and Catherine Walker. The attorneys discussed proactive compliance, what to do (and NOT do) if ICE or HSI comes knocking, and recruitment and retention strategies for hospitality employers.

April 16th, 2025

Employer Best Practice: Preparing Employees on Work Visas for Risks of International Travel

This bulletin provides a framework for businesses to support their employees traveling internationally on work visas while addressing potential risks.

April 15th, 2025

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