Donald Trump took to Twitter Monday to attack former Senate Democratic Leader Harry Reid after Reid criticized Trump in an interview with CNN.

Reid, of Nevada, has been struggling with pancreatic cancer.

Monday morning, Trump tweeted: “Former Senator Harry Reid (he got thrown out) is working hard to put a good spin on his failed career. He led through lies and deception, only to be replaced by another beauty, Cryin’ Chuck Schumer. Some things just never change!”

The truth is that Reid was not “thrown out.”

Reid retired on his own in 2017, after 30 years in the Senate. He was succeeded by Sen Catherine Cortez-Masto, a fellow Democrat.

The cause of this latest battle is an interview the 79-year-old Reid granted to CNN personality Dana Bash. Reid–who was a fierce opponent of Republican President George W. Bush during Bush’s years in office–now says he wishes for a Bush presidency “every day” compared to that of Trump.

Also, compared to Trump, Bush would be the Babe Ruth of presidents.

Reid also reports that after extremely brutal chemotherapy–which compromised his vertebrae, damaging his ability to walk on his own–the cancer is in remission. He also says he is feeling “very good.”

Reid today, in retirement, maintains an office in the Bellagio Hotel in Las Vegas.