In their early response to an onslaught of Democratic requests, Trump officials are breaking from norms set by previous administrations of both parties, according to people who worked in the White House or Capitol Hill during the presidencies of Bill Clinton, George W. Bush and Barack Obama.

Over the last two months, Trump’s intent has become clear: He doesn’t plan to negotiate with Congress over their demands for information and witnesses the way his predecessors did. Instead, House Democrats are going to have to fight him for everything.

POLITICO contacted the 17 House committees that unsuccessfully requested records or witnesses from the Trump administration over the last two months. In most cases involving the White House itself, as opposed to agencies and departments, the request was ignored altogether. In at least one instance, White House Counsel Pat Cipollone responded with an aggressive letter questioning the committee’s authority to even ask for information. (In contrast to the White House, departments and agencies often delivered requested information politely.)