"It is not an easy thing to do, but I am going to do it!" wrote Trump.
Posts, please.
Border Patrol is commissioning big tech for new tools.
New reports offer more insight on the extent of the U.S.'s biometric surveillance of immigrants.
Homeland Secretary Kristi Noem says people shouldn't try to "hide behind the First Amendment."
CBP denies the researcher was turned away for political reasons.
