Sen. Chuck Grassley (R-Iowa) is demanding information from Labor Secretary Lori Chavez-DeRemer amid a sprawling internal investigation into the cabinet official’s alleged misuse of official travel and “inappropriate” relationship with a subordinate. The powerful Senate Judiciary Committee chairman wrote to Chavez-DeRemer Wednesday asking for a response to allegations that she used departmental trips to “travel for pleasure, while having the American taxpayer foot the bill,” Bloomberg reported .