Whereas the laws of the United States have been for some time past and now are opposed and the execution thereof obstructed in the States of South Carolina, Georgia, Alabama, Florida, Mississippi, Louisiana, and Texas by combinations too powerful to be suppressed by the ordinary course of judicial proceedings or by the powers vested in the marshals by law:

Now, therefore, I, Abraham Lincoln, President of the United States in virtue of the power in me vested by the Constitution and the laws, have thought fit to call forth, and hereby do call forth, the militia of the several States of the Union, to the aggregate number of 75,000, in order to suppress said combinations and to cause the laws to be duly executed.

The details of this object will be immediately communicated to the State authorities through the War Department.

I appeal to all loyal citizens to favor, facilitate, and aid this effort to maintain the honor, the integrity, and the existence of our National Union, and the perpetuity of popular government, and to redress wrongs already long enough endured.

I deem it proper to say that the first service assigned to the forces hereby called forth will probably be to repossess the forts, places, and property which have been seized from the Union, and in every event the utmost care will be observed, consistently with the objects aforesaid, to avoid any devastation, any destruction of or interference with property, or any disturbance of peaceful citizens in any part of the country.

And I hereby command the persons composing the combinations aforesaid to disperse and retire peaceably to their respective abodes within twenty days from date.

Deeming that the present condition of public affairs presents an extraordinary occasion, I do hereby, in virtue of the power in me vested by the Constitution, convene both houses of Congress.

Senators and Representatives are therefore summoned to assemble at their respective chambers at twelve o'clock noon on Thursday, the fourth day of July next, then and there to consider and determine such measures as in their wisdom the public safety and interest may seem to demand.

In witness whereof I have hereunto set my hand and caused the seal of the United States to be affixed.

Done at the city of Washington this fifteenth 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.
George,
The way I read it, he was doing what he was supposed to do and in the fashion he was supposed to do it. COngress was in recess and the need was in his opinion imediate. Therefore he put out the call and then called Congress back into session and I think at that time, Congress gave him the war time powers that he requested and needed to quell the rebellion. I know you might not see it that way, but that is the way I see it.
Frank