Sen. Ted Cruz said Sunday that doing everything possible to thwart the Iran deal should include states exploring imposing their own sanctions. The Republican presidential candidate from Texas was asked at a raucous town hall-style forum here about the prospects of states taking action to impose sanctions on the money the Obama administration has agreed to release as part of the deal regarding the country's nuclear development.
The Supreme Court has codified into law the idea that only the president is allowed to make foreign policy, and not Congress, because if there are two branches of government setting foreign policy then America effectively has two foreign policies. The idea is that the US government needs to be a single unified entity on the world stage in order to conduct effective foreign policy. Letting the president and Congress independently set their own foreign policies would lead to chaos.