I believe Zionist Evangelicals want to destroy America, forcing it to support the Jewish State of Israel, unconditionally, even if it means fighting WW3. They're similar to the liberals who hate Putin because there aren't any rainbow flags flying over the Kremlin, hence they're ready to plunge humanity into WW3, sending weapons to Ukraine and pushing NATO as close to Russia as possible.
Too many American Christians are confused about who is Israel and YHWH's chosen today. These Evangelicals feel obligated to support non-Christian Jews politically, militarily, and financially, even if it means destroying America and the whole world. They think Jesus is going to come back sooner if they keep the Middle East smoldering with conflict.
So to answer your question. I believe Zionist Evangelicals and Zionist Jews, are more than willing to flush the USA down the latrine for the Jewish State. It's not "America First", but "Israel First" because they think the Israel Of God, are the anti-Christ Jews, who hate Jesus. This misconception has caused immeasurable harm to America.