About Us

Immigration One – a service of Clarus Law Group – is a global alliance of top lawyers that offers unparalleled immigration services, with a particular focus on the United States and the United Kingdom.

Based in London, England, with a presence in Chicago, IL, we are comprised of highly-respected, fully qualified American attorneys, English solicitors, and Australian agents licensed to practice law collectively in the United States, the United Kingdom, Australia, and New Zealand. Our lawyers are dedicated to the highest order of professional ethics and quality service, with over 50 years of combined experience, a proven success rate, and rigorous ethical standards. Many of us are listed in the World’s most established lawyer ranking services, including Who’s Who Legal and Martindale Hubbell (AV Ratings), among others.


Mona Chawla is a practising lawyer and has more than fourteen years experience in obtaining employment and investor-based visas for professionals, companies, and businesspersons wishing to relocate to the U.S. and the U.K. Mona is admitted to practice law both in New York and the United Kingdom. She is proficient in French and fluent in Hindi. Mona has advised corporate clients and individuals on the immigration consequences of relocation and investments abroad. She has also been published in the New York Law Journal, the Economic Times of India, and various trade magazines on immigration matters.

Elizabeth Sheridan is a practising lawyer with varied experience in obtaining family visas and business visas for professionals and large companies wishing to relocate to the U.S. Elizabeth is admitted to practice law in New York and has an abundance of experience with multinationals on handling their immigration needs within the U.S. and across the globe. She has been published in various newspapers and magazines highlighting the various options individuals and companies have when doing business in the U.S. She is proficient in German.

Cathrine Burnett is a registered Migration agent who has many years experience working in various aspects of Administrative Law and Investigations within the Australian Government environment, including having worked with the Migration Review Tribunal, the Australian Securities Investment Commission and with the Department of Education Science and Training. Cathrine regularly attends seminars and conferences within the UK to speak on both Australian and New Zealand Immigration. Cathrine has had extensive experience in skilled visas, business visas and spouse visas.


Michael Aspell is a qualified lawyer in the United Kingdom and New Zealand. He specializes in all aspects of UK immigration, focusing on advising investors, business persons, and skilled persons on their options to relocate to the UK. He has more than 15 years of experience in the immigration field combined with extensive experience in providing relocation training aimed at smoothing the assignee’s adaptation in the host country.

Karen Shaeffer is a Client Services Representative who deals with all initial client enquiries and assists with managing the application process. Karen has several years of experience, particularly in the area of immigration law.