Republican senators were appalled by President Trump’s rough treatment of 91-year-old Sen. Chuck Grassley (Iowa), the Senate’s most senior Republican, on social media and are pushing back on Trump’s attempts to squeeze the senator into abolishing an arcane procedure known as the Senate blue slip.

Incredibly, Senate Republicans are finally standing up to Trump on something — and it's over the judiciary committee's arcane "blue slip" tradition.

U.S. Sen. Chuck Grassley is defending a century-old process used for appointing federal judges after President Donald Trump criticized him and Senate Republicans for keeping it in place. Trump posted on Truth Social,