Hillary Clinton will give a speech today before an Alliance for American Manufacturing forum in Pittsburgh, in which she she will call for greater government action to protect workers from unfair trade practices -- a sign that she might be feeling a need to shore up labor support in the wake of Mark Penn's work for the Colombia trade deal.

The speech will primary focus on China: "We need solutions to fix our trade laws, build a strong manufacturing base, and stand up to China and say that unsafe toys and unfair currency practices are unacceptable."