U.S. President Donald Trump will look to brush off concerns about the economy and the sagging political prospects of his Republican Party during a campaign-style swing through the battleground states of Nevada and Arizona this week, as the war with Iran pushes gasoline prices higher.

Trump used a Thursday stop in Las Vegas to tout his tax and immigration bill that includes campaign promises tailored to court hourly and hospitality workers.

But spiking prices nationwide — from gas to groceries, housing to insurance — have shaken the U.S. economy and ?with it Trump’s clout to drive support to fellow conservatives in November’s midterm elections.