A job creation plan supported by the White House calls for spending an additional $50 billion on transportation infrastructure projects, including rail and highways. Funds left over from a financial rescue package could be used to fund the plan, observers say. President Barack Obama said the proposal could spur private companies throughout the U.S. to hire more workers. Meanwhile, some state leaders, including Pennsylvania Gov. Edward Rendell, are urging the White House to boost funding to $100 billion.