NEW YORK (AP) — The first line of President Donald Trump’s obituary has been written.

While Trump is all but certain to avoid removal from office, a portion of his legacy took shape Wednesday when he became just the third president in American history to be impeached by the U.S. House.

The two articles of impeachment approved along largely partisan lines on Wednesday stand as a constitutional rebuke that will stay with Trump even as he tries to trivialize their meaning and use them to power his reelection bid.

“It’ll be impossible to look back at this presidency and not discuss impeachment. It is permanently tied to his record,” said Julian Zelizer, a presidential historian at Princeton University. “Trump now always becomes part of the conversation about misusing presidential power. Ukraine will be his Watergate. Ukraine will be his Lewinsky.”

History books will add Trump to the section that features Bill Clinton, impeached 21 years ago for lying under oath about sex with White House intern Monica Lewinsky, and Andrew Johnson, impeached 151 years ago for defying Congress on Reconstruction. Richard Nixon, who avoided impeachment by resigning during the Watergate investigation, is there, too.

Trump himself is keenly aware of the impact that impeachment may have on his legacy.

Allies in recent months have described him as seething over the prospect, taking impeachment more as a personal attack and an attempt to delegitimize his presidency than a judgment on his conduct. Trump said Tuesday that he took “zero” responsibility for his expected impeachment.

“Few people in high position could have endured or passed this test,” Trump wrote in a fiery six-page letter to House Speaker Nancy Pelosi on the eve of his impeachment. “You do not know, nor do you care, the great damage and hurt you have inflicted upon wonderful and loving members of my family.”

The letter, rife with exclamation points, random capitalizations and scores of grievances, portrayed the president as the victim of an unfair and politically motivated attack.

“One hundred years from now, when people look back at this affair, I want them to understand it, and learn from it, so that it can never happen to another President again,” he wrote.

With Republicans in control of the Senate, Trump’s acquittal in a January trial there seems assured.

He has asserted that a public backlash to impeachment may help him politically by firing up loyal supporters and attracting more independents to his cause. He’s mused about taking a post-verdict victory lap, a veritable “Not Guilty Tour” akin to the “Thank You Tour” he conducted during the 2016 presidential transition.