Since you are from West Virginia and he is your senator you need to ask him
From CBS
Manchin "leaning strongly" toward approving Iran deal
The same from NewsMax
Manchin Leaning Toward Support of Iran Deal
Also from Arutz Sheva
Democratic Senator 'Leaning Towards' Supporting Iran Deal
There are many more links
I called his office in WV last week. I got a cold reception from the hired help. I need to send him a set of knee pads. No one should have to suffer the indignity of calluses on their knees. ;-)
Hopefully in 2018, he’ll be retired by the voters. Joe already stepped on his *&^% when he jumped on the gun control issue. Lots of West Virginians won’t forget that. Unfortunately the GOP has zip in the way of charismatic candidates.