2. But to Congress, by the Constitution, is expressly given the power to declare the punishment of treason, without any limitation as to the confiscation of personal property, including, of course, claims in the nature of choses in action. Congress may, therefore, take and cancel claims to service owned by Rebel slave-owners without any compensation whatever. Under the feudal law, a serf, owing service to a noble guilty of treason, became, because of his master's guilt, released from such service. 3. If, because of the present insurrection, set on foot by claimants of service or labor, such claims, from precariousness of tenure or otherwise, have diminished in market-value, that diminution may be properly taken into account in estimating just compensation. These various considerations converge to this,--that a Preamble and Act of Emancipation, somewhat in the terms following, may be constitutionally enacted. _A Bill to emancipate Persons of African Descent held to Service or Labor in certain of the United States._ Whereas there is now flagrant, in certain of the United States, an insurrection of proportions so gigantic that there has been required, to hold it in check, an increase of the army and navy of the United States to an extent seldom paralleled in the history of the world; And whereas, because of the said insurrection, the execution of the laws for collecting taxes, and of various other laws of the United States, heretofore enacted by the Congress in the just exercise of their constitutional powers, has been, for more than two years past, and still is, obstructed and defeated throughout the insurrectionary States; And whereas it is the right and duty of the Congress to make all laws which shall be necessary and proper for carrying into execution the said constitutional powers; And whereas the said insurrectionary portions of the Union consist exclusively of States wherein persons of African descent are held in large numbers to involuntary service or labor,--the white inhabitants thereof basing their insurrectionary acts upon the assumption that the security and perpetuation of such involuntary servitude require the disruption of the national unity, and the establishment, on a portion of the domain of the United States, of a separate and independent government; And whereas a large portion of the said persons of African descent, so held in servitude, contribute greatly, so long as such involuntary services are thus exacted from them, to the aid and comfort of the said insurrectionists, laboring for their behoof on their fortifications, and for the supply of their commissariat, and otherwise giving strength and support to various insurrectionary acts;