The whirlwind of unilateral action on his campaign promises has pushed the limits of presidential power – and prompted legal challenges from Democrats, unions and legal groups. So far the federal courts have been the only substantive roadblocks to Trump's agenda,

As courts issue orders that pause or restrict a number of Trump actions, a more seismic conflict potentially lies ahead. On Monday, a federal judge in Rhode Island ruled that Trump is refusing to fully comply with his order to release federal grant money that the Administration tried to freeze.