The fact that Trump can boast that he brought the troops home is what matters here. The average American is not so bothered about the fate of the Kurds (and neither is the average European given its lots-of-barking-but-no-biting response).
Graham will not get the two-thirds majority he needs to overturn any Trump veto against sanctions.
Also, it seems Turkey is making a pivot. I think it has decided its future lies in the East, not in the West.