Graham was not merely another reliable Republican vote. He occupied an unusually specific position, a bridge between Trump personally and the older, aggressively internationalist Republican national security establishment.
He could push hard on Iran, Israel, Ukraine, Russia and sanctions while still retaining direct political access inside Trump’s orbit. That combination is not easily replaced.
Graham was one of those people who continuously applied pressure to the system. Presidents make foreign policy, yes, but senators like Graham keep issues alive, build coalitions, threaten sanctions, push appropriations, publicly box administrations in, and give foreign governments a recognizable point of contact in Washington.
Especially after everything that has happened with Iran this year, his absence could genuinely alter the internal balance of the Republican foreign policy debate.
I never liked the guy. But he served a very important part & purpose. Particularly when it came to foreign policy and combating the complete naive isolationists who have taken over some of Right and all of the Left entirely.