Morning Joe host Joe Scarborough says Donald Trump is on track to knock James Buchanan off “of that dubious perch” as the “worst president of modern times.”

“Some of you may know, I left the Republican Party. Less over Donald Trump than over the fact that every elected official in the GOP has bowed and scraped at Donald Trump, treating this man whose skills are objectively declining on a daily basis, they treated this man like an emperor wearing the finest clothes ever made,” Scarborough said.

“When in fact, objectively, Donald Trump is on track to be the worst president in modern times, and perhaps ever,” Scarborough added. “Pushing even James Buchanan off of that dubious perch.”

Scarborough and his wife Mika Brzezinski soured on Trump from the middle of the 2016 presidential campaign. Republicans previously slammed Trump’s vulgar attacks on Brzezinski, when he claimed she was bleeding profusely from a facelift (that was a lie).

Watch the full segment from Morning Joe: