Immigration and border security are top issues in Arizona, the only battleground state that borders Mexico and one that contended with a record influx of asylum seekers last year.

The vice president will visit the U.S.-Mexico border in Arizona on Friday in an effort to convince voters that she will give priority to border security.

Vice President Kamala Harris is planning to visit the U.S.-Mexico border in Arizona on Friday as her campaign attempts to show she is the best-prepared candidate to tackle the simmering issue of immigration.