“Congress is unlikely to override a promised veto by President Obama if both chambers reject a deal to curtail Iran’s nuclear capabilities, according to a Washington Post analysis of where the votes currently stand. When both chambers return from the August recess, all 246 House Republicans are expected to vote against the deal, the analysis found. So far, 12 House Democrats have declared they too are opposed — more than enough to pass a resolution of disapproval through the lower chamber.”