Donald Trump will travel to Pennsylvania next week to talk up his economic agenda, the White House said Thursday, as the US president faces growing pressure over an affordability crisis that he dismisses as a "hoax."

The Republican billionaire's speech in the crucial blue-collar state marks the start of what aides say is a bid to ramp up his domestic travels, following criticism from some in his party that he has focused too much on foreign policy.

"The president will be traveling to Pennsylvania to discuss how he and the administration continue to focus on delivering on his day one priority of ending Joe Biden's inflation crisis," a White House official told AFP.

Trump insists that prices are falling and that he is fixing what he describes as a mess left by his Democratic predecessor.

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