The BBC has a piece on what this will mean:
Of course, the US MSM is avoiding what will be the effects of such a shutdown. The previous shutdown lasted 21 days between December 1995 and Jaunary 1996. The shutdown cost US$1.4 billion. How may that effect people outside the beltway:
The Environmental Protection Agency would cease issuing permits and stop reviewing environmental impact statements, slowing the approval of projects.
The Federal Housing Administration would be unable to guarantee new home loans, which could have a major impact on home sales. In 1995, the agency represented 12 percent of the mortgage market; today it’s 30 percent.
Most of the employees of Homeland Security, including border and airport security, and Coast Guard personnel, would continue to work. But the agency’s e-Verify system would be suspended.
Health and Human Services: The National Institutes of Health clinical center would not admit new patients or conduct new clinical trials, but Medicare would continue to be funded.
The Internal Revenue Service would suspend processing refunds for paper-filed returns, along with tax audits. Processing of electronic filings would continue and taxpayers would still be required to file by April 18.
Veteran Affiairs would remain open because the department now receives multi-year appropriations.
The State Department would likely stop issuing passports, which could hurt the travel industry.
Social Security Administration would continue to distribute benefits to current beneficiaries, but new applicants could be delayed.
The Small Business Administration would not be able to approve small-business loans.
The National Park Service would close all 394 areas.
Congress would continue to be paid. A bill introduced by Sen. Barbara Boxer (D-Calif.), would cut off pay.
The military would continue to operate. Service members would continue to earn their pay, but they would not be paid until Congress passes a funding bill to end the shutdown. House GOPs have introduced a bill that would fully fund service members.
The U.S. Postal Service would continue to operate, as it is a self-funded agency.
Washington D.C. tourism, could be in better shape than during the 1995 shutdown since many more museums and companies are now private. However, the Smithsonian and Washington’s National Zoo would be closed and the cherry blossom parade would be canceled.
Federal employees (an estimated 800,000 nationally) could be furloughed, which means they may be given a few hours to collect their belongings and leave. They are not allowed to work voluntarily and may not take any scheduled paid leave.
Ultimately, there will really be no winners if the US Government is again forced to shut down. The citizens of the US will lose.