Thomas Perez to head Citizenship and Immigration Services? (close with Casa de Maryland)
In April 2007, he "joined students in Annapolis to urge approval of a bill granting in-state tuition rates to undocumented immigrants" (link).
And from this:
Perez, a former Clinton Administration official and currently Maryland’s Secretary of Labor, Licensing, and Regulation, has had a long association with (CASA de Maryland). Both Montgomery and Prince George’s counties pay CASA millions of dollars each year in social services contracts and have put up additional funds to help build the organization’s future headquarters in Langley Park.
In fact, from his bio (msa.md.gov/msa/mdmanual/20dllr/html/msa14663.html):
Board of Directors, Casa of Maryland, 1995-2002 (former president)
UPDATE: Later, he was nominated to head the DOJ Civil Rights Division.