WASHINGTON - American Indian tribes throughout the country will receive 2,000 unused trailers that were intended for but never given to Hurricane Katrina victims. Thousands of trailers have been idling in Arkansas and Texas, prompting criticism about government waste. They originally were purchased to house people displaced by the hurricane, but FEMA officials said regulations against placing the homes in flood plains prevented their use on the Gulf Coast. Last year, Sen. Tim Johnson, D-S.D., urged the agency to donate the trailers to American Indian country, but the agency said federal law dictated the trailers must be used for disaster...