Senate blocks bid to bar buying Iran’s ‘heavy water’

WASHINGTON (AP) — The Senate on Wednesday blocked a Republican effort aimed at undercutting last year's landmark international nuclear deal with Iran.
The Senate fell three votes short of the 60-vote threshold — 57-42 — to move ahead on the amendment sponsored by freshman Republican Sen. Tom Cotton of Arkansas. Cotton's proposed provision would have barred the United States from using taxpayer dollars to buy any more Iranian "heavy water." The proposal had triggered a war of words with the White House.