Conservatives are holding one of their largest annual gatherings as President Donald Trump faces a tough moment and a growing rift over the war in Iran. The Conservative Political Action Conference begins Wednesday near Dallas. While Trump maintains broad support among conservatives, the war in Iran is more than a wrinkle for activists drawn to his “America First” campaign pledge against getting involved in foreign conflicts. Some featured speakers at the conference back the war, but others warn it could drain support from voters ahead of the midterm elections. Among them, Trump ally Steve Bannon calls the conflict risky for conservatives while Texas Sen. Ted Cruz is defending Trump’s decision as “exactly right.”