Article continues below advertisementMAGA country singer John Rich is the latest to take aim at Sen. Lindsey Graham's "warmongering," slamming the South Carolina Republican and labeling him a "disgusting" politician due to his hawkish foreign policy stances and aggressive comments on President Donald Trump's war in Iran.Rich recently appeared on Tomi Lahren's show, "Tomi Lahren is Fearless," where he recounted a heated confrontation with Graham in front of the president.The tension between the two escalated during a 2022 dinner in Nashville, Tenn.