As the Supreme Court gears up to decide if Donald Trump’s claims of immunity from prosecution are legitimate, another case in front of the court threatens to upend special counsel Jack Smith’s prosecution of him, Politico reported. The case, Joseph W. Fischer v. United States, has raised the issue of whether the Department of Justice has been improperly using a law originally aimed at curbing financial crimes to prosecute Jan. 6 defendant Joseph Fischer. As Politico points out, if the Court rules in Fischer’s favor, it would undermine Smith’s use of the law against Trump, as well as other Jan….