The Supreme Court has come out with two decisions in the past half century that made it clear of the limits of Presidential power!
In 1974, in US V Nixon, the Supreme Court, including three appointees of President Richard Nixon, unanimously by an 8-0 vote, declared that Nixon had to hand over the Watergate tapes to the Special Prosecutor, leading to the resignation of Nixon from the Presidency within weeks!
In 1997, in Clinton V Jones, the Supreme Court, including two appointees of President Bill Clinton, unanimously by a 9-0 vote, declared that a President had no immunity from civil law litigation in federal court for acts done before taking office. This case involved the sexual harrassment charge brought by Paula Jones against Governor Bill Clinton
Clinton’s evasiveness in testifying in court about Paula Jones led to the Monica Lewinsky scandal, and charges of perjury and obstruction of justice, and his impeachment by the House of Representatives in 1998, although found not guilty by the Senate in the impeachment trial in 1999.
Now, Donald Trump wants “executive privilege” to be in effect to prevent evidence in White House records of what he was doing on January 6, 2021 involving the Capitol Hill Insurrection, to be presented to the January 6 House Committee, investigating the events of that day. President Joe Biden has authorized waiver of such privileges, since Trump is a former President.
Despite having three Trump appointments to the Supreme Court, the strong likelihood is that the Court will, unanimously, reject such arguments, as earlier Courts did involving Richard Nixon and Bill Clinton.
If such does not happen, which seems like a long shot, then the Court will have besmirched its reputation for the long term, and the reputation of Chief Justice John Roberts will be damaged forever.
And that will promote the likelihood of attempts to add four new members to a Court which will be the most condemned and pilloried since the time of Chief Justice Roger Taney during the Civil War!