The New York Times, January 7, 2009 by Bruce Ackerman and Oona Hathaway
http://www.nytimes.com/2009/01/08/opinion/l08treaty.html?pagewanted=print
Mr. Bolton and Mr. Yoo are also on weak ground in suggesting that Congress has used its Article I authority only in the field of international trade. Both houses have acted under Article I to approve key national security accords, like the SALT agreement with the Russians or the recent United States-India nuclear agreement. Mr. Bolton and Mr. Yoo, however, don’t even mention Article I. While their claim would enable a minority of Senate Republicans to veto international agreements, it does not have a basis in either the constitutional text or precedent.