ANCHORAGE, Alaska (Reuters) - The Bush administration on Friday proposed keeping potentially oil-rich wetlands in Arctic Alaska off-limits to drilling because of their ecological sensitivity, a reversal of its earlier plan. The Bureau of Land Management proposed a 10-year leasing moratorium for 430,000 acres of wetlands north and east of vast Teshekpuk Lake in the National Petroleum Reserve-Alaska. Environmentalists and local groups hailed the decision. "This plan provides a balanced approach to energy development and wildlife protection, and forms a solid basis for the Bureau of Land Management to proceed with an oil and gas lease sale later this year,"...