Other Officials Have Power to Pardon Trump, Not Just Biden.
Trump could potentially face criminal charges at both the state and federal level, but a politically motivated pardon is unlikely. If indicted at the federal level, there may be pressure on President Biden to pardon Trump, but historical precedent suggests that such a move could be politically costly. It is also unclear whether a president can pardon themselves, and the Supreme Court has recognized constraints on the pardon power, including that pardons cannot "otherwise offend the Constitution."