Donald Trump had a stern warning to companies thinking of leaving the United States during his Sunday morning Twitter tirade.
The president-elect says firms who outsource beyond America's borders will face a massive tax increase, while those who stay will see huge financial benefits.
In the lengthy rant, he wrote: "The U.S. is going to substantialy [sic] reduce taxes and regulations on businesses, but any business that leaves our country for another country, fires its employees, builds a new factory or plant in the other country, and then thinks it will sell its product back into the U.S without retribution or consequence, is WRONG!
"There will be a tax on our soon to be strong border of 35% for these companies. wanting to sell their product, cars, A.C. units etc., back across the border.
"This tax will make leaving financially difficult, but these companies are able to move between all 50 states, with no tax or tariff being charged. Please be forewarned prior to making a very expensive mistake."