Could Biden sue Trump for libel?

Libel is for written slander. Slander is for spoken damages. I don’t know if presidential speech is protected like in Canada. Make Trump’s speech is protected while he is doing official duties.
In the states you can sue anyone for anything. Winning the suit isn’t guaranteed.

Sure, but why? That would call attention to Biden. Trump is doing a wonderful job of screwing himself. Let Trump defeat himself.

Well, first of all, it was the Ukrainian president who brought up Joe Biden specifically. Trump only brought up Crowdstrike,

Secondly. there is plenty of evidence, documentaion, even tapes, of what Joe Biden did, So it would not be possible to make a charge of libel or slander.

What about the news is a greater question. If a news station shows Joe Biden bragging to the state department about how he got the Ukrainian investigator fired who was investigating his son, by telling them they would not get the billion dollars unless the investigator was fired, could Biden sue the news network for libel or slander by showing the clip or sound-bite?

I did a quick Web search on this and, as @RedDeerGuy1 said, a distinction is made between official and unofficial activity by the President. A president can only be sued for unofficial activity. Are writing tweets or hurling insults directed at Biden part of official duty? What about campaigning to be re-elected? None of that seems very official.

The bandit gets it right. The more Trump talks, the greater the certainty that he’ll talk himself into prison.

If it could be proven that he was hurt financially.

I guess if you believe Biden could sue Trump for slander or libel, then you would have to say that Trump could also sue Hillary, the DNC, Comey, CNN, MSNBC, and probably many, many others for all the lies about the Russian Collusion that were put out. They were far more blatant than anything Trump did. Besides, Biden bragged about his corrupt actions.

The smoke screen erected to slander Biden a ALREADY evaporated. Yell all you want about the transgressions of Biden, the Clintons, Obama—no one gives a damn. The bottom line is that the RIGHT crook is on his way to the gallows.

He could. I doubt he’d get very far, but he could. You can sue anybody for anything if you can find a lawyer willing to take the case.

I don’t think Biden wants to invite scrutiny into his son getting $50k per month from a Ukrainian energy company. Trump definitely crossed a line, but that doesn’t mean Biden isn’t dirty too.