NEW YORK (AP) — The chairman of the House Transportation Committee says he'll back off his proposal that the government privatize the Washington-to-Boston train line that is Amtrak's crown jewel.U.S. Rep. John Mica (MY'-kuh) wanted to sell the Northeast Corridor route to the highest bidder. But on Tuesday, he said Congress was lukewarm on the plan.Mica wants the Northeast Corridor to launch a high-speed train project. The Florida Republican said he would try to funnel money from any other failed rail projects into it.A report last week said California's plan to build a high-speed rail line could cost $98.5 billion. That's twice as much as originally budgeted.Mica said he plans to hold a hearing in December to look at whether that plan and others are still feasible.