March 9 (UPI) -- Travelers are experiencing long lines at airport and land crossing TSA checkpoints as a partial government shutdown begins to take its toll right at Spring Break. The Department of Homeland Security, which includes the Transportation Security Administration, is shut down because Congress couldn't agree on a funding package for the department. Democrats don't want to fund it until some guardrails are put on the agency, and Republicans haven't agreed to Democrats' demands . As a