President Donald Trump's tariff dispute with China, Canada and Mexico over fentanyl smuggling and illegal immigration has led to retaliation by the Chinese government.

Some of the purported concessions that led to a 30-day pause on the tariffs were things Canada and Mexico had already done before Trump’s threat, but it’s complicated.

Feb. 3, 1:57 p.m. EST Trump announced the tariffs against Canada will be paused for 30 days, saying the longtime U.S. ally will implement a $1.3 billion border reinforcement plan that will bolster the U.S.-Canada border with “new choppers, technology and personnel... and increased resources to stop the flow of fentanyl.”