In the interest of full disclosure, I tend to vote liberally and Democrat.
Americans today wouldn't stand for the treatment of fellow American traders any more than their ancestors did. If another nation was aggressively impressing our men and women (forcing them to serve in an armed force) and/or taking our shipments of goods, our government would absolutely take action. We care too much about our economy, too much about our well-being, to let that kind of aggression go unanswered.
There would be pressure from Congress and the public to "Save America"; the far-right of the Republican party would doubtlessly seize the opportunity to strike fear in Americans while the far-left liberal agenda would likely stay relatively quiet. It's an issue both sides can agree on -- American goods and people should be protected -- but the noise of one side would drown out the solutions of the other. Our new War Hawks would push for a declaration of war and there probably would be one. The president, however, would likely want to steer the nation to a more evident victory; the war of 1812 was such a wash!