NEW: Remarkable video from our Fox drone team shows an enormous line of hundreds of migrants who just crossed illegally into Brownsville, TX this evening. A large majority of them are single adults. The RGV continues to see a massive surge of illegal crossings ahead of T42 drop. pic.twitter.com/xHDV8sc8PD

— Bill Melugin (@BillFOXLA) May 8, 2023