Protesters who trekked in a vehicle convoy to Texas this week, including some flying pro-Donald Trump banners alongside American and Texas flags, are expected to rally against illegal immigration near the U.S.-Mexico border on Saturday. Dozens of cars gathered outside a Christian children’s ranch in the remote town of Quemado on Friday night, some adorned with Trump paraphernalia and other conservative messages. Border security remained an overarching theme, but protesters also carried signs opp