Donald Trump is attempting to avoid his impending trial on charges of trying to overturn his 2020 election defeat by appealing a ruling by the federal judge overseeing the trial denying Trump’s claim that he is immune from prosecution related to official actions he took as president, Andrew Goudsward reports for Reuters. Experts say the maneuver could work by bogging down the system and keeping him free to campaign against Democratic President Joe Biden. That ruling may be the last one Trump will be able to appeal before the start of his trial, currently scheduled to begin in March. If Trump regains the presidency, he would likely be able to pardon himself in the two federal cases or install leaders at the Justice Department who would shut them down. The two state cases could also be put on hold while he remains in office.