CONGRESSCongressional trips overseas likely will take a hit. House Speaker John Boehner told Republican members in a closed-door meeting that he's suspending the use of military aircraft for official trips by House members. Lawmakers typically travel on military planes for fact-finding trips to Afghanistan or Pakistan, or other congressional excursions to foreign locales. NUCLEAR SECURITY Cleanup of radioactive waste at nuclear sites across the country would be delayed. The Energy Department says the cuts would postpone work at the department's highest-risk sites, including the Hanford Nuclear Reservation near Richland, Wash., where six tanks are leaking radioactive waste left over from decades of plutonium production for nuclear weapons. Other high-risk sites facing work delays are the Oak Ridge Reservation in Tennessee, Savannah River Site in South Carolina and the Idaho National Laboratory. TAX COLLECTION Any furloughs at the Internal Revenue Service will be delayed until summer, after the tax filing season ends, so the agency says it shouldn't delay tax refunds. But other IRS services will be affected. Millions of taxpayers may not be able get responses from IRS call centers and taxpayer assistance centers. The cuts would delay IRS responses to taxpayer letters and force the agency to complete fewer tax return reviews, reducing its ability to detect and prevent fraud. The IRS says this could result in billions of dollars in lost revenue to the government, complicating deficit reduction efforts. LABOR More than 3.8 million people jobless for six months or longer could see their unemployment benefits reduced by as much as 9.4 percent. Thousands of veterans would not receive job counseling. Fewer Occupational Safety and Health Administration inspectors could mean 1,200 fewer inspections of dangerous work sites.