Chief Justice John Roberts’ decision not to preside over former President Donald Trump’s second impeachment trial has raised concerns about whether the proceedings are constitutional. Senate Majority Leader Chuck Schumer (D-N.Y.) told MSNBC that Roberts “did not want” to partake in the impeachment trial. “The Constitution says the chief justice presides for a sitting president,” he said. “So it was up to John Roberts whether he wanted to preside with a president who is no longer sitting, Trump, and he doesn’t want to do it.” Schumer has argued that an impeachment trial of a president once he’s left office is constitutional and vowed to go through with it. Instead of Roberts, Sen. Patrick Leahy (D-Vt.), the Senate president pro tempore, will preside over the trial. The Supreme Court has not responded to a request for comment from the Epoch Times or other news outlets about the reason why Roberts won’t partake. …