With inflation creeping back into the US economy, it's as important as ever to have a firm grasp on Donald Trump's tariffs and what they mean.

“The key is will we see that effective tariff rate hover around the 15 to 17% level, or will it be north of 20%?” he said.

One of the few areas where Trump has seen relative strength is immigration. In July, 47 percent of working-class voters said they approve of his handling of immigration, while 45 percent disapprove—a sharp improvement from June, when he had a 39 percent approval to 55 percent disapproval split. May's numbers were evenly divided at 45 percent.