ning the war had passed, states began to look to their own interests rather than the country's. By the mid-1780s, states were refusing to provide Congress with funding, which meant the government could not meet the interest on its foreign debt, pay the soldiers stationed along the Ohio River, or defend American navigation rights on the Mississippi River against Spanish interference. In 1782, Rhode Island vetoed an amendment that would have allowed Congress to levy taxes on imports to pay off federal debts. A second attempt was made to approve a federal impost in 1785; however, this time it was New York which disapproved. The Confederation Congress also lacked the power to regulate foreign and interstate commerce. Britain, France and Spain imposed restrictions on American ships and products, while the U.S. was unable to coordinate retaliatory trade policies. When Massachusetts and Pennsylvania placed reciprocal duties on British trade, neighboring states such as Connecticut and Delaware established free ports to gain an economic advantage. Some states even began applying customs duties against the trade of neighboring states. In 1784, Congress proposed an amendment to give it powers over foreign trade; however, it failed to receive unanimous approval by the states. Many upper-class Americans complained that state constitutions were too democratic and, as a result, legislators were more concerned with maintaining popular approval than doin