WASHINGTON — The White House sharply escalated its resistance to congressional attempts to investigate President Donald Trump, notifying the House Judiciary panel Wednesday that it would refuse to comply with sweeping requests for documents and witness testimony while declaring that the legislative branch had no right to a “do-over” of the special counsel’s Russia probe.

White House counsel Pat Cipollone sent a 12-page letter to the committee chairman, Rep. Jerrold Nadler, D-N.Y., labeling congressional investigations as efforts to “harass” Trump in the wake of special counsel Robert Mueller’s probe into Russian election interference. Current and former administration officials will not be permitted to testify, according to the White House, and the administration will fight subpoenas as Congress moves to step up investigations into Trump’s presidency and finances.

Cipollone offered what is a new favored talking point among Trump’s allies: that Congress is a legislative, not law enforcement, body and does not have a right to pursue most investigations.

Democrats are clashing with the administration on myriad fronts, including over access to Mueller’s full report. Trump for the first time earlier this month invoked the principle of executive privilege, claiming the right to block lawmakers from the unredacted document.