Watch: Bill Maher asks Republicans why they’re ‘lying to cover up’ for Trump
Comedian Bill Maher on MSNBC (screengrab)

HBO "Real Time" host Bill Maher wondered why Republicans were lying to aid President Donald Trump's cover-up of impropriety during a Tuesday appearance on MSNBC's "Hardball" with Chris Matthews.

"In the time you've been away and watching this massacre of democracy, this president has been asked if he's a Russian agent," Matthews noted. "The idea the president of the United States is accused by the paper-of-record of working for the bad guys."

"It's about time. I've been using the word treason and traitor for the whole time he's been in office and every guest I've had on the show has been saying I was an alarmist and overstating the case," Maher noted. "I don't hear that anymore, I hear those words used a lot more."

"That's what it is. What is it when you're plainly with the people who are not us? Didn't we see that in Helsinki?" he asked. "Can you imagine if Bush after 9/11 had stood on the rubble with the bullhorn and said, well, 'bin Laden said he didn't do it. I don't know why he would have'?"

Maher offered a medical explanation for what we are seeing from Trump.

"I think what you have to understand about him is that he is this political narcissist," Maher argued. "I think every article should begin 'President Trump, who suffers from being a clinical narcissist,' and then go on with the story."

"Because there is no difference in his mind, his sick mind, between doing what is right for him and doing what is right the country. I don't think he thinks in terms of whether he's betraying anybody. There is no betraying. There is only what is right and good for Donald Trump," he explained.

"I don't know how we get out of this except by getting him out of office. I wasn't necessarily for impeachment until recently, but I think you have to go ahead and do it -- I know it's pretty hard to convict," Maher continued. "But if you don't do it with him, where is the bar? And what sort of damage is he going to do for the next two years that he is there in this office?"

"I think the question for everybody is, 'whose side are you on?' On the FBI's side? He's got Republicans now attacking the FBI and all our institutions," he noted.

"Are you with Trump, this one man, this one sick man? Or are you with the FBI?" he asked. "Are you with the rule of law or are you with Donald Trump?"

"I want to know what the Lindsey Grahams are thinking? Why are you lying to cover up for this guy and you don't even know what you're lying to cover up?" he wondered.