Trump is used to this after doing it many times.

He buys companies and when he finds they have shitty contracts he wants to re-negotiate, he has a team of lawyers hold the other parties to the letter of the contract. Then he gets his way and renegotiates the contracts.

Right now he is still in the 'hold their feet to the fire' part and with the amount of laws on the books there is no end in sight unless the Libtards decide to negotiate a new deal.