House Intelligence Committee Chairman Adam Schiff vowed Sunday to look into the claims from BuzzFeed’s disputed story claiming Michael Cohen told special counsel Robert Mueller the president directed him to lie to Congress about business dealings in Russia.

“Congress has a fundamental interest in two things, first in getting to the bottom of why a witness came before us and lied and who else was knowledgeable that this was a lie,” the California Democrat told CBS News’ “Face the Nation.”