After the Declaration of Independence was issued, Morris continued to supervise and coordinate efforts to secure arms and ammunition and export American goods. His strategy focused on using ships from New England to export tobacco and other goods from the Southern states to Europe and the islands of the Caribbean, then using the capital obtained from those exports to purchase military supplies from Europe. British spies and warships often frustrated his plans, and many American ships were captured in the midst of trading operations. In response, Morris authorized American envoys in Europe to commission privateers to attack British shipping, and he arranged for an agent, William Bingham, to pay for repairs to American privateers on the French island of Martinique. Due to the lucrative nature of privateering, Morris also started outfitting his own privateers. Another agent of Morris's, his half-brother Thomas Morris, proved a disastrous choice for managing American privateers in Europe, as Thomas engaged in binge drinking and mismanaged funds. In October 1776, at the urging of Morris and Benjamin Franklin, Congress authorized the appointment of two envoys charged with seeking a formal treaty of alliance with France; ultimately, Benjamin Franklin and Arthur Lee were appointed as those envoys. Along with Silas Deane, Franklin would help to greatly expand arms shipments from France and Spain, but Lee proved to be completely incompetent in his efforts to gain support from Prussia and the Habsburg Monarchy.