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			 "This is a close call, but after a lengthy review, I will vote to 
			disapprove the deal," Cardin, the top Democrat on the influential 
			Senate Foreign Relations Committee, said in an opinion column to be 
			published in The Washington Post. 
			 
			The Maryland lawmaker became the third Senate Democrat to announce 
			his opposition. The others, Charles Schumer of New York and Robert 
			Menendez of New Jersey, came out against it last month. 
			 
			But the "yes" list in the Senate reached 38 on Friday, as Michael 
			Bennet of Colorado announced his support for the deal. All of the 
			lawmakers in favor are Democrats or independents who generally vote 
			with them. 
			 
			That left just five of Obama's fellow Democrats in the chamber 
			undecided, including Richard Blumenthal of Connecticut, Maria 
			Cantwell of Washington, Joe Manchin of West Virginia, Gary Peters of 
			Michigan and Ron Wyden of Oregon. 
			
			  Under a law co-written by Cardin and signed by Obama in May, 
			Congress has until Sept. 17 to vote on a "resolution of disapproval" 
			of the nuclear agreement, announced on July 14 between the United 
			States, five other world powers and Tehran. 
			 
			If such a resolution passed Congress and lawmakers overrode Obama's 
			promised veto, it would weaken the nuclear deal by eliminating the 
			president's ability to waive many sanctions on Iran, a key component 
			of the pact. 
			 
			When Cardin's fellow Maryland Democrat, Barbara Mikulski, became the 
			34th senator supporting the deal on Wednesday, Obama was assured 
			that Congress would sustain a veto. Deal opponents need two-thirds 
			majorities in both the 100-member Senate and 435-seat House of 
			Representatives to override a veto. 
			 
			HOPE FOR 41 
			 
			Deal supporters have been hoping to muster 41 Senate votes to use 
			the filibuster procedural rule to block a vote on a disapproval 
			resolution in the Senate and keep Obama from having to use his veto. 
			 
			Cardin's announcement makes that target a more difficult one, more 
			so as a spokesman for Manchin said he had decided he would not 
			support a filibuster, although he has yet to make up his mind about 
			the nuclear agreement itself. 
			 
			
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			Lawmakers will begin to consider the resolution of disapproval as 
			soon as they return from their August recess on Tuesday. The first 
			vote in the House of Representatives is expected next week and the 
			Senate could also begin voting as soon as next week. 
			 
			With Republicans virtually united in opposition, Democrats have 
			spent the past two months rallying support for an agreement seen as 
			a potential legacy foreign policy achievement for the president. 
			 
			Bennet, like many other lawmakers who support the pact, said it is 
			not perfect but seems like the best way to keep Iran from obtaining 
			a nuclear weapon. 
			 
			"Our primary objectives are to prevent Iran from having a nuclear 
			weapon, make sure Israel is safe and, if possible, avoid another war 
			in the Middle East," Bennet said in a statement. "This agreement 
			represents a flawed, but important step to accomplish those goals." 
			 
			No Republican in either the House or Senate has backed the nuclear 
			deal. 
			 
			One Republican seen as a possible deal supporter, Republican Senator 
			Susan Collins of Maine, is expected to announce her position after 
			Congress returns to Washington next week. 
			 
			(Reporting by Patricia Zengerle; Editing by Peter Cooney, Susan 
			Heavey and Steve Orlofsky) 
			
			[© 2015 Thomson Reuters. All rights 
			reserved.] 
			Copyright 2015 Reuters. All rights reserved. This material may not be published, 
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