A president facing a major scandal, just as the highest-profile trial is about to begin, pardons the indicted or convicted officials around him to effectively stop the investigation that's closing in on his own illegal conduct.
Trump soon? We'll see. But this actually describes what President George H.W. Bush did in 1992.
The Iran/Contra scandal revealed, among other things, that the Reagan/Bush White House had secretly sold missiles to Iran in exchange for hostages held in Lebanon, using the proceeds to fund right-wing forces fighting the leftist Nicaraguan government in violation of US law.
On Christmas Eve 1992, just as the indicted former Defense Secretary Caspar Weinberger was about to face trial, Bush pardoned him and five others, including former Assistant Secretary of State Elliott Abrams and and former National Security Advisor Robert McFarlane. The New York Times (12/25/92) reported this as "Bush Pardons 6 in Iran Affair, Averting a Weinberger Trial; Prosecutor Assails 'Cover-Up.'"