Key facts
- Republican lawmakers are skeptical of President Donald Trump's Iran deal.
- Senator Thune downplayed 'reconciliation 3.0' legislative strategy.
- Republican leaders want to pivot focus from Iran to economic issues.
- President Trump's Iran ceasefire is a critical moment for his presidency and GOP majorities.
- Senator Tim Kaine plans an Iran vote this week.
- An opinion piece noted the Iran negotiation reveals Trump's strengths and weaknesses.