President-elect Donald Trump on Tuesday chose trade lawyer Jamieson Greer as his new U.S. trade representative, elevating a key veteran of his first-term trade war against China to execute a sweeping tariff agenda that promises to upend global trade.

(Reuters) -U.S. President-elect Donald Trump said on Monday that on his first day in office he would impose a 25% tariff on all products from Mexico and Canada, and an additional 10% tariff on goods from China, citing concerns over illegal immigration and the trade of illicit drugs.

In their initial round of responses to Trump's surprise announcement on Monday for a 25% tariff on imports from Canada and Mexico and an additional 10% levy on Chinese goods until they clamped down on illicit drugs and migrants crossing the border,

Reaction to Trump's day one promise to slap tariffs on three of the America's key trading partners: Mexico, Canada and China. The president-elect framed the proposal as a response to the fentanyl crisis.

Financial analysts and business leaders on Tuesday reacted to a threat from U.S. President-elect Donald Trump to impose 25% tariffs on top trade partners Mexico and Canada when he takes office for a second term in January in a move that could trigger a trade war.

President-elect Donald Trump is vowing to raise tariffs on Canadian, Mexican and Chinese goods, which is likely to mean higher prices for consumers, according to an MIT economist.