Democratic presidential candidate Bernie Sanders says he will fight for immigration reform while standing yards from a border fence that divides Arizona and Mexico.

The Vermont senator was accompanied by Santa Cruz County Sheriff Tony Estrada and U.S. Rep. Raul Grijalva during the Saturday morning press conference in Nogales, Arizona.

Sanders also spoke with two young immigrants while walking alongside a port of entry on the international border. A small group of people who identified themselves as U.S. military veterans stood on the Mexican side of the fence cheering, while one man protested.

Sanders has focused his campaign almost exclusively in Arizona in the past week as the looks to rebound from his defeat last week to Hillary Clinton.