Kamala Harris is set to visit the southern US border for the first time in three years in an attempt to confront her electoral vulnerabilities on immigration.
The US vice-president will view a port of entry between Mexico and the battleground state of Arizona later on Friday afternoon before holding a rally in the border town of Douglas.
Campaign aides said the Democratic presidential candidate will use the visit to attack Donald Trump on an issue that has been central to the Republican’s campaign, and a major weakness of her own.
She is expected to highlight the former president’s role in tanking legislation put forward by a cross-party group of senators that was hailed as the toughest bipartisan border security plan in a generation.
It marks her first visit to the southern border since June 2021, and only her second as vice-president, despite being tasked by Joe Biden with stemming the flow of migrants from Latin America into the US early in his term.