
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
21 November 2025
Home Office announces ‘earned settlement’ proposals
The Home Office yesterday announced its ‘earned settlement’ proposals and opened its consultation on this topic. This concept was originally…
18 November 2025
Zeena Luchowa quoted in The Guardian on Government’s significant proposed changes to asylum and returns policy
Zeena Luchowa (Partner) has been quoted by The Guardian in an article explaining the Government's announcement of changes to asylum and returns…
15 October 2025
Home Office publishes Statement of Changes in Immigration Rules HC 1333
Yesterday, the Home Office published the Statement of Changes in Immigration Rules (HC 1333). The Statement, the sixth of the year, introduces a…
