Biden, Trump head to US-Mexico border with immigration top issue in 2024 raceGood morning, US politics blog readers. Joe Biden and Donald Trump will both be in Texas today to visit the US border with Mexico, amid public frustration over undocumented migrants crossing into the country. The visits by the current and former president come after a bargain to implement hardline policies meant to keep migrants out coupled with new military aid to Ukraine and Israel fell apart in Congress, leaving the fate of these national security priorities uncertain. Yet all signs point to continued public…