By SAM HANANELWASHINGTON (AP) â¿¿ A government shutdown would have far-reaching consequences for some, but minimal impact on others. Mail would be delivered. Social Security and Medicare benefits would continue to flow. But vacationers would be turned away from national parks and Smithsonian museums. Low-to-moderate income borrowers and first-time homebuyers seeking government-backed mortgages could face delays. A look at how services would or would not be affected if Congress fails to reach an agreement averting a government shutdown at midnight Monday. AIR TRAVEL Federal air traffic controllers would remain on the job and airport screeners would keep funneling passengers through security checkpoints. Federal inspectors would continue enforcing safety rules. INTERNATIONAL TRAVEL The State Department would continue processing foreign applications for visas and U.S. applications for passports, since fees are collected to finance those services. Embassies and consulates overseas would continue to provide services to American citizens. BENEFIT PAYMENTS Social Security and Medicare benefits would keep coming, but there could be delays in processing new disability applications. Unemployment benefits would still go out. FEDERAL COURTS Federal courts would continue operating normally for about 10 business days after the start of a shutdown, roughly until the middle of October. If the shutdown continues, the judiciary would have to begin furloughs of employees whose work is not considered essential. But cases would continue to be heard. MAIL Deliveries would continue as usual because the U.S. Postal Service receives no tax dollars for day-to-day operations. It relies on income from stamps and other postal fees to keep running. RECREATION All national parks would be closed, as would the Smithsonian museums, including the National Zoo in Washington. Visitors using overnight campgrounds or other park facilities would be given 48 hours to make alternate arrangements and leave the park. Among the visitor centers that would be closed: the Statue of Liberty and Ellis Island in New York, Independence Hall in Philadelphia, Alcatraz Island near San Francisco and the Washington Monument.