The Supreme Court just dealt a huge blow to Congress’s power to investigate Trump

“Trump v. Vance, largely maintains the status quo. As Chief Justice John Roberts states in the first line of that opinion, “in our judicial system, ‘the public has a right to every man’s evidence,’” and “since the earliest days of the Republic, ‘every man’ has included the President of the United States.” Trump does not enjoy absolute immunity from a state prosecutor’s criminal investigation.”

“The upshot of Trump v. Mazars is that House investigators almost certainly will not see potentially damning records concerning Trump’s finances until after the November election. Mazars was also written by Roberts.
Though Mazars does not preclude the House from seeing those records eventually, by the time those records become available Trump will almost certainly either be an ex-president, or he will be firmly entrenched in his second term.

On the surface, it is easy to see Mazars as a defeat for Trump. The decision was 7-2, with all four of the Court’s liberals joining the majority. Justices Clarence Thomas and Samuel Alito both wrote dissents, where they complain that the majority didn’t do enough to protect Trump from investigation.

But make no mistake, Mazars is a victory for Trump because it holds that the president enjoys special immunity from congressional investigation enjoyed by no other citizen — and because it likely shields Trump’s records from the public eye until after the election.”

“Eastland held that Congress is entitled to gather information — and to use compulsory subpoenas to gather such information — whenever that subpoena is “intended to gather information about a subject on which legislation may be had.” So long as the congressional subpoenas sought information on a topic that could plausibly be subject to an act of Congress, those subpoenas were lawful.
The new rule announced in Mazars, however, can be boiled down into four words: “the president is special.”

According to Roberts, “congressional subpoenas for the President’s information unavoidably pit the political branches against one another.” He adds that “without limits on its subpoena powers, Congress could ‘exert an imperious controul’ [sic] over the Executive Branch and aggrandize itself at the President’s expense, just as the Framers feared.”

So Mazars invents new limits on congressional subpoenas targeting the president, and sends the case back down to a lower court to apply this new rule.”