Normally these kind of things are called treaties and require a 2/3 majority to pass.
Obama knew he couldn’t get there so he had the Uniparty led by Corker pass legislation that stands the Constitution on its head and requires 2/3 majority to reject this so-called Iran “deal”.
Its simple legislation that can be overturned at any time.
The big issue is the release of 150 billion dollars to float Irans weapons and terror network
The whole agreement is a sham because Iran can simply subcontract its nuclear weapons and ballistic missile development to Russia, North Korea and China and possibly Pakistan.
Iran is already placing massive orders for Russian and Chinese aircraft and missiles in anticipation of the release of sanctions.
These weapons will give iran regional and worldwide weapons delivery capabilities.
The big issue here is freeing 150 billion in frozen assets and terminating sanctions to give Iran the economic power and political freedom to fully pursue its military objectives
Ironically, this may backfire on Iran. We in the United States may be irresponsible and feckless but the other players in the region are not.
The Sunnis Arab oil states already hate the shia and have been spoiling to eradicate them for some time.
The players in the middle east already have massive military superiority over Iran and Iran is weak and near economic implosion due to its massive nuclear expenditures in the face of what have been crippling sanctions
It would make perfect sense for the regional players to get together and destroy Iran's weapons programs while they still have time
Since Iran is propping up Assad in Syria, seriously hurting Iran's military capability would also put a stop to that help and allow the Arab oil states to realize their dream of oil and gas pipelines going through Syria to bust the Russian European gas monopoly and supply Europe with oil and gas inexpensively