US Republican presidential nominee, Donald Trump, has turned his attention to the economy. On Monday, he outlined several plans that could have ripple effects around the globe. Among them is his stand against US free trade agreements. CCTV America's Jessica Stone has the story.

In Monday's economic policy speech, Trump proposed steep tax cuts, "My plan will reduce the current number of brackets from 7 to 3 and dramatically streamline the process."

But he's proposed equally steep increases in government spending-policies that could drive up U.S. debt and disrupt the global economy. Progressive think tanks say Trump's previous tax plan would cost the U.S. economy around one trillion dollars a year.

Enough people have noticed to boost Democratic presidential candidate, Hillary Clinton, in the polls. She has whittled Trump's lead on handling the U.S. economy.

According to an NBC/Wall Street Journal poll, Trump now leads Clinton by just four points, down from 11 in May.

Trump is using free trade deals as weapons to attack Clinton. Trump opposes the Trans-Pacific Partnership trade deal signed earlier this year. And the North American Free Trade Agreement with Canada and Mexico signed by her husband.

"A vote for Hillary Clinton is a vote for TPP and it's also a vote for NAFTA," said Trump. 

He also promised to invest in U.S. infrastructure and bring back manufacturing jobs that he says went overseas to countries like China.

Clinton criticized Trump's proposals saying they rehash "Trickle-down economics"-a failed economic policy from the 1980s. "Trickle-down economics does not help our economy grow, it does not help the vast majority of Americans but it does really well for people already at the top."

"Last year, Clinton withdrew her support for the Trans-Pacific Pacific partnership-it's a vote loser in this election. She plans to make an economic address in Detroit on Thursday," said Jessica Stone from Washington.