President Trump’s agenda could be worse than current policies for United States economic growth, according to two Goldman Sachs economists.

Analysts from the international investment bank say potential trade restrictions and immigration limits would hinder American economic growth, Bloomberg News reported.

Trump promised his agenda would grow the American economy by 4-6 percent of gross domestic product through tax reform, deregulation and renegotiating trade deals. Experts say the promise is unrealistic for an economy the size and age of the United States.

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Trump and his economic team have floated imposing high taxes on imports from countries the White House believes are ripping off the U.S. in trade. Those tariffs would need to start as legislation, since Congress has jurisdiction over tax policy.

Trump is also discussing a bill offered by Republican Sens. Tom Cotton Tom Bryant CottonLoeffler calls for hearing in wake of Netflix's 'Cuties' Health care in the crosshairs with new Trump Supreme Court list Cruz says he wouldn't accept Supreme Court nomination MORE (Ark.) and David Perdue (Ga.) that would half most yearly legal immigration limits.

"The risks around U.S. policy have also turned somewhat more negative," wrote Goldman analysts Jan Hatzius Jari Stehn. “Our simulations suggest that Mr. Trump’s policies could boost growth slightly in 2017 and 2018, but are likely to weigh on growth thereafter if trade and immigration restrictions are enacted.”

The Goldman analysts predicted a “full Trump” agenda of tariffs, a $450-billion infrastructure package of tax credits and direct spending and a 2.5 million labor force reduction from immigration limits would grow the economy by just over 7 percent of GDP by 2020.

Current projections from the Federal Reserve based on pre-election U.S. policies predict 8 percent growth by 2020.

Trump ripped Goldman Sachs on the campaign trail but tapped several former employees and alumni for senior administration roles.

Trump’s senior adviser Steven Bannon and Treasury secretary nominee Steven Mnuchin are both Goldman Sachs alumni, and former COO Gary Cohn left the bank to direct Trump’s National Economic Council. Former Goldman partner Dina Powell also left in January for the White House.

Trump’s presidency has long been predicted to be a drag on the economy. Overnight trading was halted on election night as Trump’s victory became clearer, but his promise to cut regulations fueled a stock boom.