Trump is lying again, this time about Comey's firing

THE president of the United States is lying again.

He is lying about the reason he fired James Comey, the FBI director. Mr Trump claimed that he was doing so because Mr Comey bungled the investigation into Hillary Clinton's email, which meant that Mr Comey was "not able to effectively lead the bureau". There is no reason to believe Mr Trump's version of the facts and many reasons to believe he is lying. How can I be so confident?

First, it's important to remember just how often Mr Trump lies. Virtually whenever he finds it more convenient to tell a falsehood than to tell a truth, he chooses the falsehood.