From TSA lines to disaster relief, here's how a DHS shutdown would hurt

"The Trump administration's immigration and border security operations are at the heart of the partisan dispute that could spark a shutdown. Compared to other parts of the agency, though, the federal government's three immigration-focused agencies aren't as affected by funding lapses. About 40 percent of funding for Immigration and Customs Enforcement, Customs and Border Protection and U.S. Citizenship and Immigration Services is untouched by a lapse."

"When airport security screeners start missing pay, many stop showing up to work, causing TSA lines to grow at hubs throughout the country. In prior shutdowns, that started happening about a month in. This time, screeners would begin missing full paychecks in mid-March, likely spurring longer waits during the peak of spring break travel. While DHS paid air marshals during the historic government shutdown last fall, that didn't cover checks for the TSA screeners who keep people and their baggage moving through U.S. airports."

A partial lapse in appropriations will not immediately cripple immigration-focused components of DHS because about 40 percent of ICE, CBP and USCIS funding comes from mandatory funds, fees and one-time GOP legislation. CBP remains more reliant on annual appropriations despite receiving large additional sums last year. TSA screeners face missed paychecks starting mid-March, which historically leads to increased absences and longer airport lines during peak travel. DHS paid air marshals during the prior shutdown, but that did not cover TSA screeners. FEMA's disaster relief balance is limited, with about $7 billion remaining.

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