The irs has rejected a request from the department of homeland security to provide personal data of 700,000 suspected undocumented immigrants, raising concerns over privacy and profiling.

Leaders of the Internal Revenue Service rejected a request from immigration enforcement officials.

DHS requested the irs to connect names of potentially undocumented immigrants with their last known addresses.

Attempted to leverage the tax service to assist an immigration crackdown.

Former national taxpayer advocate who highlighted the legality of sharing taxpayer information.

Commented on the racial implications of the DHS's request for taxpayer data.