Retired Lt. Gen. John "Dan" Caine promised to stay out of politics and only provide President Donald Trump with honest assessments if confirmed as general and chairman of the Joint Chiefs of Staff.

Caine’s nomination is likely to raise questions from some Democrats whether he will remain independent of Trump.

President Trump’s pick to be the chairman of the Joint Chiefs of Staff told senators during his confirmation hearing that he would give the president candid guidance and stay out of politics. But he also said he was willing to push back if asked to do something unconstitutional and suggested concern about recent messages sent by senior national security leaders over Signal.