CP Platform:
Article I, Section 8 provides that duties, imposts, and excises are legitimate revenue-raising measures on which the United States government may properly rely. We support a tariff based revenue system, as did the Founding Fathers, which was the policy of these United States during most of the nation's history.
In no event will the U.S. tariff on any foreign import be less than the difference between the foreign item's cost of production and the cost of production of a similar item produced in these United States. The cost of production of a U.S. product shall include, but not be limited to, all compensation, including fringe benefits, paid to American workers, and environmental costs of doing business imposed on business by federal, state, and local governments.
Tariffs are not only a constitutional source of revenue, but, wisely administered, are an aid to preservation of the national economy. Since the adoption of the 1934 Trade Agreements Act, the United States government has engaged in a free trade policy which has destroyed or endangered important segments of our domestic agriculture and industry, undercut the wages of our working men and women, and totally destroyed or shipped abroad the jobs of hundreds of thousands of workers. This free trade policy is being used to foster socialism in America through welfare and subsidy programs.
Also:
Against "inadequately regulated" trade.
http://www.constitutionparty.com/news.php?aid=40
Now, if the argument is tariffs over income taxes of flat tax or FAIR tax, for what is needed for (I hope we all agree much reduced) federal government spending, then let's have that debate (I'm open to persuasion there), but to advocate dirigiste policies is to admit that, on this issue, the CP is diametrically opposed to Dr. Paul's agenda.