As president he could legally veto/cancel any Bill. Until the FISA court goes through major reforms or anything else to his liking. One of the worst FISA abuse was the politicized-spying targeting the Trump campaign in 2016. Because the FISA court used FAKE evidence to first spy on him as US citizen, then after he was elected the FISA court continued to spy on him in 2017 using the same FAKE evidence. A total of 4 abusive renewals. 90 days each. If the FISA court abuses a duly elected President in an alleged Coup to remove him, imagine how the FISA could abuse you without equal justice under law. Or abuse any future duly elected Presidents from any party, Republican or Democrat.