USDA Secretary Tom Vilsack came under fire from House Ag Committee Republicans at a Tuesday hearing for his plans to furlough meat inspectors under sequestration. The hearing was supposed to review the state of the rural economy - but it quickly shifted to a GOP-led attack on Vilsack’s meat inspector furlough threat as the White House and Hill continued to jostle over who’s to blame for the sequester. House Ag Chair Frank Lucas…