The House passed a new bill Wednesday aimed at barring members of Congress from purchasing and trading individual stocks, a long-championed proposal. While lawmakers have long sought a stock trading bill, the measure lost significant Democratic support when Republicans added provisions. (Photo by Anna Moneymaker/Getty Images)Meanwhile, Democrats are criticizing the bill after Republicans added a voter ID provision and exempted the president and vice president from the bill. The bill, dubbed the Stop Insider Trading Act, now heads to the Senate, where lawmakers in both parties have raised concerns about the stock trading restrictions, the voter I.D. Congressional stock trading has become a prominent campaign issue, with lawmakers and candidates on both sides of the aisle calling to ban the practice.