BOSTON (AP) — House Democratic Leader Nancy Pelosi is faulting the U.S. Senate for voting to strip away a portion of President Obama's landmark health care law. Last week the Senate voted 79-20 to repeal a 2.3 percent sales tax on medical devices such as catheters, pacemakers and MRI machines. The tax was intended to help to finance coverage for the uninsured that starts next year. Among those voting to eliminate the tax were Massachusetts Sens. Elizabeth Warren and William ''Mo'' Cowan, both Democrats.