Trump: Chamber of Commerce must 'fight harder' for workers
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Donald TrumpDonald John TrumpGiuliani says he is unaware of reported federal investigation Louisiana's Democratic governor forced into runoff Lawmakers focus their ire on NBA, not China MORE on Wednesday hit back at the U.S. Chamber of Commerce after the business group criticized his trade policy.

"The @USCHAMBER must fight harder for the American worker," Trump tweeted Wednesday. 

"Why would the USChamber be upset by the fact that I want to negotiate better and stronger trade deals or that I want penalties for cheaters?" he added.

 

  

 

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The Chamber of Commerce, which supports free-trade agreements, blasted Trump's plans on trade in a series of tweets Tuesday. 

"Under Trump's trade plans, we would see higher prices, fewer jobs, and a weaker economy," the Chamber tweeted. 

"Even under best case scenario, Trump's tariffs would strip us of at least 3.5 million jobs." 

The business group was responding to a speech Trump gave Tuesday, in which he said he would demand a renegotiation of the North American Free Trade Agreement (NAFTA) between the United States, Mexico and Canada. 

If those other countries refuse the renegotiation, Trump said he would withdraw from the trade pact, which would cause tariffs to rise on imports from those countries and exports from the United States. 

The presumptive Republican presidential nominee also said he would kill the Trans-Pacific Partnership trade deal negotiated by President Obama, the biggest trade deal since NAFTA.