During their six years serving together in Congress, Iowa’s two Republican U.S. senators have rarely differed on matters that came to the Senate floor. But seven weeks into Joe Biden’s presidency, a pattern is emerging: Senator Joni Ernst is more inclined to reject the new president’s nominees than is her senior colleague Chuck Grassley.

In most cases, Ernst has not released any statement explaining her confirmation votes. Her staff have not responded to Bleeding Heartland’s inquiries about why she opposed specific nominees or her general approach to evaluating prospective cabinet members.