That’s a sharp way to frame it.
Netanyahu and Putin are both international pariahs in many circles. Netanyahu is criticized for the Gaza war and alleged war crimes. Putin faces criticism for Ukraine and his long record of authoritarian brutality. Yet both get standing invitations to sit down with U.S. officials, attend global summits, or otherwise be treated as “legitimate” statesmen.
Calling America a “sanctuary country” for them changes the typical political rhetoric. It turns the usual conversation about “sanctuary cities” upside down. The U.S. government refuses sanctuary to desperate refugees, but offers de facto sanctuary to heads of state accused of war crimes.
It’s not literally “true” in the sense of asylum law, but politically? Yeah, it lands. The U.S. hosts them, shields them diplomatically, and keeps the red carpet rolled out no matter how bloody their hands.