What event in u. s history banned imports from all foreign countries?

The 1812 war
This was a crisis involving the USA and great Britain, during the Napoleonic wars. Great Britain had embarked on impressionism and seizing of USA merchant ships. To prevent war with great Britain, which was one of the main alternative, Jefferson reacted by banning all imports from  European powers.

Answership building; new england was almost entirely mercantilist