Barack Obama is telling Pennsylvania unions that he will fight the type of trade deals struck by the Clinton and Bush administrations.
Obama today was endorsed by the National Union of Hospital and Health Care Employees, which should be a boost in a state where 830,000 union voters are expected to vote later this month. Pennsylvania's primary will allocate 158 delegates to the Democratic national convention.
Obama -- speaking at a the meeting of the Pennsylvania AFL-CIO in Philadelphia -- says he will always oppose trade deals that "put the interests of Wall Street ahead of the interests of American workers."
Obama says he opposes NAFTA, which was struck with Mexico and Canada during Bill Clinton's presidency.