The question in the present case is of importance in two aspects: _first_, as it involves the determination of a question of political power under our Constitution; and, _secondly_, as it may affect the interest of private individuals. In the first aspect, the question would not be unimportant, constitutionally, if the treaty with Denmark were the only one affected by it; but the frequency of the provision in recent treaties adds to its interest. Unknown in early days, it makes its first appearance as late as 1822 in a treaty with France, and then in 1826 in this very treaty with Denmark; but it has been repeated constantly since. Here is a list, now in my hand, of no less than _forty-six_ different treaties of the United States with _thirty-two_ different foreign powers, in which this provision will be found. Among these is the important stipulation with Great Britain, under which a squadron is kept on the coast of Africa for the suppression of the slave-trade; and you are now to determine whether the Senate will assume to itself the extraordinary power now claimed over all these treaties, or will leave it in the hands of Congress. And, still further, if this power is assumed by the Senate, can it be exercised by a mere majority, or will a vote of two thirds be required? How shall this question be decided? This very difficulty of detail helps point to the true conclusion. But here is the list. _Memorandum of Treaties containing provision for their termination._ +----------------------+----------------+--------+-------+------+ | With what country | Date. |Article |Vol. of|Pages.| | made. | | | Laws. | | +----------------------+----------------+--------+-------+------+ |France |24 June, 1822| 7 | 8 | 280 | | ” | 9 Nov., 1843| 6 | 8 | 582 | | ” |23 Feb., 1853| 13 | 10 | 999 | |Denmark |26 April, 1826| 11 | 8 | 342 | |Sweden and Norway | 4 July, 1827| 19 | 8 | 356 | |Great Britain | 6 August, 1827| 2 | 8 | 360 | | ” ” | 6 August, 1827| 2 | 8 | 362 | | ” ” | 9 August, 1842| 11 | 8 | 577 | | ” ” |15 Dec., 1848| 22 | 9 | 970 | | ” ” | 5 June, 1854| 5 | 10 | 1092 | |Hanseatic Republics |20 Dec., 1827| 10 | 8 | 370 | | ” ” |30 April, 1852| 2 | 10 | 962 | |Prussia | 1 May, 1828| 15 | 8 | 386 | | ” |16 June, 1852| 5 | 10 | 967 | |Brazil |12 Dec., 1828| 33 | 8 | 397 | |Austria |27 August, 1829| 12 | 8 | 401 | | ” | 8 May, 1848| 5 | 9 | 947 |