Former President Donald Trump and Vice President Kamala Harris are intensifying their campaigns in battleground states with a focus on immigration and border security. Trump visited the southern border in Arizona, criticizing Harris's handling of immigration and labeling her as a failed 'border czar'. Harris, meanwhile, is campaigning on a tougher immigration stance than traditionally held by Democrats, aiming to balance border security with pathways to citizenship. Polls show a tight race in crucial states like Arizona, with Harris holding a slight lead over Trump in some surveys. The Democratic National Convention showcased Harris's commitment to border security, while Trump focused on highlighting the failures of the current administration's immigration policies. Both candidates are actively engaging Latino voters, with Harris performing better or the same as Biden in terms of border security among this demographic.