Rep. Jim Jordan, R-Ohio, subpoenaed Philadelphia District Attorney Larry Krasner, seeking information on his office's sanctuary policies. 

The probe is looking into possible preferential treatment of illegal immigrants to avoid them having to face deportation for any crimes they're charged with. 

Jordan, who chairs the House Judiciary Committee, said in a news release on Wednesday that Krasner had spent the past two months ignoring requests for documents. 

"Krasner's pro-illegal alien policies appear intentionally designed to thwart this authority. Moreover, preferential treatment of foreign nationals by his office may also violate federal civil rights laws," a committee announcement on the subpoena said.