Please show us data that proves that absurd statement.
Sure:
"[It] obviously was a joke about their age difference, and the look of joy we see on her face every time they're together," the late night host adds
Jimmy Kimmel Defends ‘Expectant Widow’ Joke as ‘Light Roast,’ Urges Melania to Confront Trump’s ‘Violent Rhetoric’ | Video
Jimmy Kimmel fired back at Melania and Donald Trump's calls for his termination after his "widow" joke pre-The White House Correspondents' Dinner went viral in the wake of the shooting.
You don't agree with the person who said it. He said/He said. Case dismissed.
In this case, the Kimmel remark is thought by some to encourage the death of a president. If that is the case, the remark is not protected by the First Amendment as it has to potential to foment something harmful or illegal.
What some people think is not admissible in court.