President of Swartz and Associates. His firm is registered under the Foreign Agents Registration Act (his entry here) and he is listed as a foreign agent for the Government of El Salvador [1]

Has worked for the Mexican government (No one's on the fence as Mexico rips 'disgraceful' plan, U.S. cites security)

Co-founder of the National Immigration Forum.

May have been hired by Immigrant Voice to lobby for them ( JOB DESTRUCTION NEWSLETTER April 26, 2006 same link)

From this:

[The National Immigration Forum is] the umbrella organization for high-immigration political advocacy, which works closely with sympathetic Republicans. But NIF is not like the conventional lobbying coalitions that exist on numerous issues. It was cofounded by the National Lawyers Guild in the 1980s, back when the Guild was a Soviet front group. The group's first head was Rick Swartz, a leftist attorney who cut his teeth advocating for Haitian illegal aliens and who, during a 1981 Senate hearing, likened the United States to Nazi Germany.