Graham has served in the Senate since 2003 and is a close ally of President Donald Trump, despite being widely regarded as one of the most neoconservative foreign policy hawks and a stalwart of the old guard GOP.
Anthony was convicted by the jury in Collin County earlier Tuesday after a week-long trial. The jury determined that Anthony fatally stabbed Metcalf at a track meet in Frisco, Texas. He faced up to life in prison.