Cornyn told reporters that the Justice Department has not adequately addressed in writing his concerns about the settlement that afforded Trump and members of his family protection from tax audits. Another Republican on the committee, Thom Tillis of North Carolina, has backed Cornyn’s position, and just one Republican holdout could sink Blanche’s prospects. “They know what they need to do but they simply refuse to do it,” Cornyn, who lost the Republican primary in May, said of the Justice Department. Cornyn has also demanded clarification from the Justice Department on the scope of the tax immunity deal. Blanche has said the deal covers any existing audits but does not protect the president from examination of future tax filings.