President Obama said Thursday that he does not believe a special counsel needs to be appointed to investigate the Internal Revenue Service’s practice of targeting conservative groups, saying congressional hearings and a federal criminal investigation should be enough to determine what happened.

“My main concern is fixing the problem,” Obama said during a news conference with visiting Turkish Prime Minister Recep Tayyip Erdogan.

Obama also called on Congress to fully fund his budget proposal to increase security at U.S. diplomatic missions abroad, following the deadly attack on the U.S. post in Benghazi, Libya, last year.