President Donald Trump deployed roughly 150 Immigrations and Customs Enforcement (ICE) agents into more than a dozen US airports across the country on Monday, after a partial government shutdown led to hours-long security lines and air travel chaos over the weekend. The president initially framed the move as an effort to relieve the long TSA lines and support the Transportation Security Administration (TSA), whose agents are calling out sick and resigning by the hundreds in their first week without pay due to the shutdown. But after the first full day of ICE’s deployment in airports, it remains unclear exactly what duties these immigration agents have been sent to perform. Still, travelers should be aware of their legal rights as they prepare to face a new kind of security hurdle en route to catch a flight.…