Started about a decade ago to fight illegal border-related activities and the trafficking of both drugs and people, it has expanded over the past five years.

Some of the lawsuits (cited in article) to fight this, and illegal pull overs, go back years.

Really? It shows how this tech can be used in ways you don't like, when your party is no longer in power. How whatever laws you pass, surveillance you enact, powers you give, aren't just for you.

But also your political adversary.