FBI directors by law are appointed to 10-year terms as a means of insulating the bureau from politics.Wray, whom Trump tapped after firing James Comey in 2017 for investigating his 2016 campaign, has been a frequent target of Trump supporters’ ire. During Wray’s tenure, the FBI carried out a court-approved search at Trump’s Mar-a-Lago estate to look for classified documents and he has also faced criticism for his oversight role of a directive by attorney-general Merrick Garland aimed at working to protect local school boards from violent threats and harassment.Special counsel Jack…