The videos roll through TikTok in 30-second flashes. Migrants trek in camouflage through desert terrain. Dune buggies roar up to the US-Mexico border barrier. Families with young children pass through gaps in the wall. Laced with emojis, the videos posted by smugglers offer a simple promise: If you don’t have a visa in the US, trust us—we’ll get you over safely.
