Normally, when the words Washington, D.C., and pork are uttered, one connotes the legislative branch and the “pork barrel” spending that has been legendary in Congress. But this time, we are hearing about pork from a building adjacent to the U.S. Capital — the U.S. Supreme Court. Of five decisions the court issued late last week, the one about pigs might be the most interesting of the bunch.Dormant commerce clauseArticle I, section 8, clause 3 of the U.S. Constitution gives Congress the power to “regulate commerce with …