One of the first acts of Lincoln was to blockade the Confederate ports. Please pay special attention to the reason and date given for such action
War of the Rebellion: Serial 122 Page 0122 CORRESPONDENCE, ETC.
BY THE PRESIDENT OF THE UNITED STATES OF AMERICA:
Whereas, for the reasons assigned in my proclamation if the 19th instant, a blockade of the ports of the States of South Carolina, Georgia, Florida, Alabama, Louisiana, Mississippi, and Texas was ordered to be established;
And whereas since that date public property of the United States has been seized, the collection of the revenue obstructed, and duly commissioned officers of the United States while engaged in executing the orders of their superiors have been arrested and held in custody as prisoners, or have been impeded in the discharge of their official duties without due legal process by persons claiming to act under authorities of the States of Virginia and North Carolina:
An efficient blockade of the ports of those States will also be established.
It witness whereof I have hereupon set my hand and caused the seal of the United States to be affixed.
Done at the city of Washington this twenty-seventh day of April, in the year of our Lord one thousand eight hundred and sixty-one, and of the Independence of the United States the eighty-fifth.