President Donald Trump late Thursday threatened a 35% tariff on goods imported from Canada, a dramatic escalation in an on-again, off-again trade war with America’s northern neighbor and one of its most important trading partners.

The sector-specific tariffs are putting pressure on businesses and foreign nations as they try to navigate Trump’s constantly evolving trade agenda.

President Donald Trump has launched a wave of Section 232 tariffs and investigations, seeking to protect U.S. national security. These nine graphics show the scale and structure of U.S. reliance on

President Donald Trump’s shock-and-awe tariff campaign is off to a slow start when it comes to reviving American manufacturing jobs.

If implemented, Trump's new 35 percent duties will be "separate from all Sectoral Tariffs," such as the 50 percent tariff on steel and aluminum imports. Trump also promised that, if Canada raises its own tariffs in response, then "whatever number [Canada chooses] to raise them by, will be added onto the 35% that [the U.S. charges]."

It’s almost as if tariffs are the new sanctions. Consider Trump’s announcement Wednesday that Brazil will face 50 percent tariffs. He made that threat in part because he’s upset about how the current Brazilian government is treating former Brazilian President JAIR BOLSONARO,

As the U.S president threatens Canada with blanket 35% tariffs, Paul Donovan, Chief Economist at UBS Global Wealth Management, says the next wave of Trump tariffs may have little or no impact on U.S.