MIAMI, Feb. 21 (UPI) -- Homeland Security Secretary Janet Napolitano warned customs lines at Miami International Airport will get longer if there are forced cuts in the budget.

Napolitano, accompanied by congressional representatives, visited the airport Wednesday, The Miami Herald reported. Officials say about 1,000 travelers a day already miss flight connections because of long delays at Customs and Immigration at the airport, the nation's busiest for international flights.