Then he should be supporting legislation to ban all politically motivated prosecutions. One way would be do abolish prosecutorial discretion (allow a defendant to get off if it is shown the crime in question is not usually prosecuted). Another way, is to prohibit prosecutors or elected officials from discussing a case, and allow the defendant to change the trial to a venue of his choice. Saying you object to “my team” getting prosecuted, while prosecuting the “other team” accomplishes nothing except to undermine the concept of “rule of law”.