Pakistan, June 15 -- Brian Rauch has felt the squeeze of higher gas prices on his 30-mile (50-km) drives from his home in rural Stevensville, Montana, to the doctor's office. He has also noticed food prices going up and, as an Air Force veteran, sees little rationale for the US-Israeli war on Iran.

These are among the reasons the 42-year-old increasingly disapproves of the performance of President Donald Trump, the man he voted for in the last three presidential elections, putting him among a growing portion of rural Americans disappointed by his leadership in Washington.

Trump's approval rating among rural Americans dropped in June to a new low of 50%, according to the June 3-8 Reuters/Ipsos poll. That compares with 60% approval in Feb...