In 1915 he was sponsor in the Senate for the seamen's bill providing for better working conditions and increase of life-saving equipment on board ship. He favoured, in 1916, an embargo on the shipment of arms from America, but supported armed intervention in Mexico.
Great Britain retaliated by laying an embargo on the vessels of the three neutral powers, and by sending a considerable fleet to the Baltic under the command of Parker and Nelson.
The sworn foe of strong government, he was compelled, in pursuance of Jefferson's policy, to put into execution the Embargo and other radical and stringent measures.
The embargo and non-intercourse laws from 1807 to 1812 were a severe blow to Maine's shipping, and in the War of 1812 Eastport, Castine, Hampden, Bangor and Machias fell into the hands of the British.
When news of the embargo of the port at Boston arrived at New Haven, a Committee of Correspondence was at once formed; and in the War of Independence the people enthusiastically supported the American cause.
This outrageous demand was followed by three others - that the Athenians should (I) withdraw from Potidaea, (2) restore autonomy to Aegina, and (3) withdraw the embargo on Megarian commerce.