Whereas, An insurrection against the Government of the United States has broken out in the States of South Carolina, Georgia, Alabama, Florida, Mississippi, Louisiana, and Texas, and the laws of the United States for the collection of the revenue cannot be efficiently executed therein, conformably to that provision of the Constitution which requires duties to be uniform throughout the United States: 

And whereas, A combination of persons, engaged in such insurrection, have threatened to grant pretended letters of marque to authorize the bearers thereof to commit assaults on the lives, vessels, and property of good citizens of the country lawfully engaged in commerce on the high seas, and in waters of the United States: 

And whereas, An Executive Proclamation has already been issued, requiring the persons engaged in these disorderly proceedings to desist therefrom, calling out a militia force for the purpose of repressing the same, and convening Congress in extraordinary session to deliberate and determine thereon: 

Now, therefore, I, ABRAHAM LINCOLN, President of the United States, with a view to the same purposes before mentioned, and to the protection of the public peace, and the lives and property of quiet and orderly citizens pursuing their lawful occupations, until Congress shall have assembled and deliberated on the said unlawful proceedings, or until the same shall have ceased, have further deemed it advisable to set on foot a blockade of the ports within the States aforesaid, in pursuance of the laws of the United States, and of the laws of nations in such cases provided.  For this purpose a competent force will be posted so as to prevent entrance and exit of vessels from the ports aforesaid.  If, therefore, with a view to violate such blockade, a vessel shall approach or shall attempt to leave any of the said ports, she shall be duly warned by the commander of one of the blockading vessels, who shall indorse on her register the fact and date of such warning; and if the same vessel shall again attempt to enter or leave the blockaded port, she will be captured and sent to the nearest convenient port, for such proceedings against her and her cargo, as prize, as may be deemed advisable.

And I hereby proclaim and declare, that if any person, under the pretended authority of said States, or under any other pretense, shall molest a vessel of the United States, or the persons or cargo on board of her, such person will be held amenable to the laws of the United States for the prevention and punishment of piracy.

     By the President, ABRAHAM LINCOLN. 
     WILLIAM H. SEWARD, Secretary of State. 
     WASHINGTON, April 19, 1861.