A Mexican official pictured at the bridge connecting Tijuana and San Diego, in April 2018. The Department of Homeland Security is investigating the policies of Customs and Border Protection after documents appeared to show that the agency targeted journalists. (Reuters/Mike Blake)
A Mexican official pictured at the bridge connecting Tijuana and San Diego, in April 2018. The Department of Homeland Security is investigating the policies of Customs and Border Protection after documents appeared to show that the agency targeted journalists. (Reuters/Mike Blake)

What we need to know about CBP’s searches of journalists at San Diego