Is Christian Zionism in the US on a decline?

Christian Zionism, a movement that believes in the return of Jesus Christ through Jewish immigration to Palestine, has significant influence over the US power structure despite a decline in public support. With substantial financial resources and institutional heft, Christian Zionists have used their influence to secure billions in funding to Israel and lobby for sanctions on Iran. They have also played a key role in shaping US foreign policy, particularly in the Middle East.