"We are going to renegotiate or we're going to pull out. These trade deals are a disaster. World Trade Organization is a disaster," Trump told NBC's 'Meet the Press' on Sunday, his first since being named as Republican presidential nominee.
The 70-year-old billionaire has been an opponent of multilateral trade deals and has said that he would review all of these trade deals and would enter into individual trade deals with countries.
Companies moving their manufacturing base out of the US during his administration would have to face con sequences, he said, adding they would have to pay a hefty penalty for this.
"It could be 25 per cent, could be 35 per cent, could be 15 per cent. I haven't determined. It could be different for different companies. We have been working on trying to stop this government because we don't know what we're doing," he said in response to a question.
Trump said the Cleveland convention of the Republican has united the party.