This month, MSNBC host Joe Scarborough escalated his attempt to portray himself as a committed leader of the Trump opposition: He announced that he was leaving the Republican party and wrote that “Trump’s Republicans have devolved into a party without a cause, dominated by a leader hopelessly ill-informed about the basics of conservatism, U.S. history and the Constitution.” Somehow, Scarborough appears to have forgotten how he repeatedly covered for Trump as the latter bulldozed his way to the White House — or perhaps Scarborough hopes others will forget if he criticizes Trump enough.

Let’s review the history.

In 2011, Trump, then just a businessman and reality-TV host, first began to question President Obama’s birthplace. He quickly became an unapologetic leader of the “birther” movement, and the attention he received helped propel him into politics.

He opted out of the 2012 race, but soon enough Trump officially announced his 2016 presidential campaign — with a speech that insulted Mexicans and openly stoked racial tensions. He later insulted prisoners of war (while failing to note he had avoided the draft using deferments) and also frequently made sexist remarks, insinuating Megyn Kelly was unable to control her emotions and arguing voters would reject Carly Fiorina as president because of her appearance. Meanwhile, Trump found Russian president Vladimir Putin worthy of praise.