Answer:
The US Congress did not want to support a free-trade agreement.
Explanation:
The US congress blocked the treaty because most of the expectations from the country were not met, and they wanted third worl countries to accept that they´d also lower their CO2 emissions, otherwise the industries that were about to be heavily taxed by the States, would just flee to third world countries where they wouldn´t have to pay those taxes and profit would be larger with cheaper wages.
