Greg Floyd, left, acting special agent in charge of the IRS-criminal Investigation, Philadelphia Office, speaks during a news conference announcing corruption charges against Philadelphia District Attorney Seth Williams, Tuesday, March 21, 2017, in Philadelphia. Williams, Philadelphia's top prosecutor, was charged Tuesday with taking more than $160,000 in luxury gifts, Caribbean trips and cash, often in exchange for official favors that included help with a court case, according to a bribery and extortion indictment unsealed Tuesday. (AP Photo/Matt Slocum)