The war of 1812 was not wholly popular with the inhabitants of the coast towns of Maine. The embargo Act of April 4, and the declaration of war against Great Britain by Congress June 18, 1812, brought matters to a head. The maritime interest could only see ruin and disaster ahead.
Many of our people went into privateering, others embarked in smuggling, or the importation of contraband goods. I am inclined to think that many United State soldiers would fight a British soldier, who would be very tender towards British goods. The State was full of British goods from St. Croix to Kittery. All kinds of schemes were invented to get them into Maine. It has been stated that both governments winked at the violation of the laws relating to goods contraband of war. [Source]
From the Press-Herald:
"A letter in Canada's national archives shows that Porter [who was engaged in "questionable" trade] openly tried to negotiate an illegal trade agreement with military officials in Halifax, Nova Scotia. He offered $50,000 as security if they would allow one of his privateers to bring flour, beef and pork to Canada and fake the "capture" of British goods to be brought to the United States."
'"I don't believe they ever answered him," Smith said.'
Privateers in a book review at this blog.