Democrats and aligned advocacy groups are hitting the airwaves with a flood of campaign ads on the Iran war as they seek to win back in the House and Senate.

President Donald Trump is heading to Kansas on Monday and Iowa later in the week, the latest in a series of stops where he's trying to energize his base in the final weeks before the midterm elections. The economic strain is becoming a growing political concern for Republicans in states they have long dominated.

The path to a U.S. House majority runs through heavily Latino districts in states such as Arizona, Colorado and Texas, where Democrats are counting on disaffected Trump supporters to swing back their way.