Mary Cecilia Sweeney

Attorney

Sector: US Immigration
Location: London

MC is an attorney with the US team in London. Her practice areas include advising and preparing all categories of non-immigrant and immigrant cases, with particular emphasis on L-1 intra-company transfers and Blanket petitions, E-1 and E-2 treaty investors, O-1 persons with extraordinary ability, waivers of inadmissibility, EB-1 and family-based green cards. MC also advises on US citizenship matters including renunciation. Before joining LDI, she specialized in US litigation as a partner with boutique law firm Kaplan Landau LLP in New York.

History
2021-present – Laura Devine Immigration, London
2008-2017 – Kaplan & Landau LLP, New York
2006-2008 – Sullivan & Worcester LLP, New York
2003-2006 – Weil, Gotshal & Manges LLP, New York

Education
2004 – Admitted to the U.S. Federal Courts of the Eastern and Southern Districts of New York
2004 – Admitted to State Bar of New York
1999-2003 – Juris Doctorate, Fordham University School of Law, New York

Latest Insights


US immigration update: What you need to know about the Alien Registration Act in 2025

Long-standing US legislation called Alien Registration Act (also known at the Smith Act) requires most noncitizens aged 14 or older who remain in the…

Updating eVisas – new sanctions introduced

Many overseas nationals now have an eVisa, a digital UK immigration status, replacing the former physical Biometric Residence Permit (BRP). This can…

Change in thresholds for sponsor company size classification from 6 April 2025

On 6 April 2025 the criteria used to define small companies under the Companies Act 2006 changed, impacting relevant companies responsible for paying…