Sen. Lindsey Graham (R-S.C.) warned that he and other Republicans would call up top Democrats as witnesses in former President Donald Trump’s impeachment trial. Should Democrats vote to call witnesses, Republicans would call up Democratic senators, he said in an interview with Fox News’ Sean Hannity on Monday night. “If the House managers want to call one witness, the defense is going to call all those people you named and then some,” the South Carolina Republican said Monday. That includes President Joe Biden, Vice President Kamala Harris, Senate Majority Leader Chuck Schumer (D-N.Y.), House Speaker Nancy Pelosi (D-Calif.), Rep. Maxine Waters (D-Calif.), and Sen. Cory Booker (D-N.J.). “To my colleagues tomorrow—there are a hundred of us—what we do today is going to make history for the rest of the time America exists. What Democrats have done is basically declare war on the presidency itself,” he said. Some Republicans, including Trump’s team, …