down smugglers and violators. Three acts were passed in Congress during 1807 and 1808, called the Supplementary, the Additional, and the Enforcement acts. The government could not prevent American vessels from trading with the European belligerents once they had left American ports, although the embargo triggered a devastating decline in exports. Most historians consider Jefferson's embargo to have been ineffective and harmful to American interests. Appleby describes the strategy as Jefferson's "least effective policy", and Joseph Ellis calls it "an unadulterated calamity". Others, however, portray it as an innovative, nonviolent measure which aided France in its war with Britain while preserving American neutrality. Jefferson believed that the failure of the embargo was due to selfish traders and merchants showing a lack of "republican virtue." He maintained that, had the embargo been widely observed, it would have avoided war in 1812. In December 1807, Jefferson announced his intention not to seek a third term. He turned his attention increasingly to Monticello during the last year of his presidency, giving Madison and Gallatin almost total control of affairs. Shortly before leaving office in March 1809, Jefferson signed the repeal of the Embargo. In its place, the Non-Intercourse Act was passed, but it proved no more effective. The day before Madison was inaugurated as his successor, Jefferson said that he felt like "a prisoner, released from his chains". Cabinet Post-presidency (1809–1826) Following his retirement from the presidency, Jefferson continued his pursuit of educational interests; he sold his vast collection of books to the Library of Congress, and founded and built the University of Virginia. Jefferson continued to correspond with many of the country's leaders (including his two protégées who succeeded him as president), and the Monroe Doctrine bears a strong resemblance to solicited advice that Jefferson gave to Monroe in 1823. As he settled into private life at Monticello, Jefferson developed a daily routine of rising early. He would spend several hours writing letters, with which he was often deluged. In the midday, he would often inspect the plantation on horseback. In the evenings, his family enjoyed leisure time in the gardens; late at night, Jefferson would retire to bed with a book. However, his routine was often interrupted by uninvited visitors and tourists eager to see the icon in his final days, turning Monticello into "a virtual hotel". University of Virginia Jefferson envisioned a university free of church influences where students could