CBS host Robert Costa grilled Sen. Lindsey Graham (R-SC) after former President Donald Trump amplified calls for military tribunals for former Rep. Liz Cheney (R-WY) and others. While appearing on Face the Nation Sunday, Graham was asked about how the Supreme Court's ruling on presidential immunity would impact a potential second term for Trump. "This is someone who pushed to overturn the election in late 2020, early 2021," Costa said of Trump.