Sen. Elizabeth Warren (D-Mass.) said President Donald Trumps appointment of Mick Mulvaney as acting director of the Consumer Financial Protection Bureau is more proof he cares more about big banks than working families.

Warren, who spearheaded the CFPBs creation in 2011, spoke out against the internal war over the agencys leadership in an interview published Monday in The Washington Post .

This is about whose side president Trump is on big banks, or working families, Warren told the Post. So far in his administration, he has chosen the big banks time after time. Is he going to stand up for the working families who helped elect him?