Published: Apr 06, 2011 11:23 PM EDT
Updated: Apr 06, 2011 6:51 PM EDT

FT. MYERS, Fla. - The clock is ticking in the nation's capitol, where lawmakers still have not reached an agreement on how to fund the government. 

The deadline is Friday at midnight.  If no new budget is in place by then, officials warn hundreds of thousands of federal employees could be furloughed, programs could be suspended, and military paychecks delayed until an agreement is reached.

CBS News explains where you most likely would and would not see an impact.

* Social Security:  Recipients would be largely unaffected by a shutdown, according to an administration official. Checks for seniors, those with disabilities, and survivors would go out as usual.   Social Security Administration employees could face furloughs, but the agency is still finalizing its plan.

* Homeland Security: Critical functions, like border control, would continue.

* Mail delivery: The U.S. Postal Service is owned by the government but self-funded - so operations would continue uninterrupted.

* Air traffic control: As a function of maintaining public safety, Air traffic control would be exempt from a shutdown.

* Food inspection: Meat and poultry testing would likely continue, in accordance with federal mandates that those activities deemed "essential to ensure continued public health or safety" continue.

* National parks and monuments:  As the New York Times puts it, "The National Zoo would close, but the lions and tigers would get fed." National parks and museums, including those on the National Mall, like the Smithsonian, would shut down - just in time for spring break.

* Passport operations: All operations would be likely suspended, except for in cases of emergency.

* International Revenue Services (IRS): The IRs would close, but the April tax deadline would stay in place - so Americans would still have to pay their taxes on time. But according to a senior administration official, the processing of paper tax returns (which accounts for about 30 percent of all returns) would be suspended - as would refunds associated with those returns.

* The U.S. Small Business Administration (SBA): The SBA, which is dedicated to supporting small businesses, would suspend approval of applications for business loan guarantees, as well as direct loans to small businesses.

* The Federal Housing Administration (FHA): The FHA would be forced to suspend approvals for new loan guarantees during peak home-buying season.

* Medicare: According to an administration official, Medicare is funded for the short-term - and would likely remain unaffected unless the government were to remain closed for a period of months or more. NIH, however, will not be able to accept new patients or begin new clinical trials.

* Uniformed military personnel would continue to serve, but they would not get paid for their work until the government reopened. (Troops would get one week, not two weeks, pay in their next check, as the shutdown would go into effect in the middle of a pay cycle.) And a number of Pentagon civilians, State Department officials and USAID staff would likely be furloughed.

* Veterans services will largely go uninterrupted, as the Veterans Administration receives its yearly appropriation in advance and thus has the money to fund services for the rest of the year.

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