Welcome to The Daily Politic Briefing!  Good morning and thank you for joining us for today's essential political updates. I'm your host, bringing you the most significant developments from Washington and beyond. Our team has compiled the critical stories shaping the political landscape right now, with analysis to help you understand what it all means.   Today's Headlines  First up, we'll examine the Senate's race to finalize a complex megabill with pressure mounting from President Trump. Then, we'll look at the shakeup in House Oversight Committee leadership as Democrats select Rep. Robert Garcia for their top position. We'll also cover the latest on Iran war powers resolutions, healthcare policy debates, and Senator Murkowski's surprising comments about her party affiliation.   Senate Megabill Progress  Senate Majority Leader John Thune is pushing for votes to begin Thursday on a comprehensive megabill, despite several unresolved issues. Committees are working frantically to redraft portions after parliamentary rulings, with final decisions from parliamentarian Elizabeth MacDonough expected soon.  President Trump has directly involved himself in the negotiations, meeting with fiscal hawks Senators Ron Johnson, Mike Lee, and Rick Scott at the White House. During these discussions, Trump expressed support for repealing green energy credits and implementing a balanced budget approach.  On the SALT deduction front, Senator Markwayne Mullin has proposed maintaining the $40,000 cap while adjusting income thresholds. Meanwhile, GOP leaders are considering establishing a fund to help offset Medicaid changes affecting rural hospitals.   House Oversight Leadership Shift  In a significant development for House Democrats, Representative Robert Garcia has emerged as the leading candidate for the top Democratic position on the House Oversight Committee. Garcia secured 33 votes from the steering committee, outpacing Representatives Stephen Lynch, Kweisi Mfume, and Jasmine Crockett.  Garcia, the former mayor of Long Beach, California, has positioned himself as someone who can bridge the divide between Democrats seeking direct confrontation with Trump and party veterans preferring different approaches. This election highlights the ongoing tension between traditional seniority systems and calls for younger leadership within the Democratic Party.   Iran War Powers Developments  Following President Trump's announcement of a ceasefire, Representative Thomas Massie informed Speaker Mike Johnson he would no longer advance a resolution blocking U.S. involvement in the Iran-Israel conflict. Speaker Johnson called the measure "moot" given the breakthrough.  However, Democratic Representatives Jim Himes, Gregory Meeks, and Adam Smith have introduced their own war powers resolution. In the Senate, Tim Kaine stated he's proceeding with forcing a vote on a similar resolution regardless of the ceasefire, indicating continued concern about presidential war powers.   Healthcare Policy Debates  Senator Bill Cassidy has criticized HHS Secretary Robert F. Kennedy Jr.'s vaccine advisers, citing concerns about their experience. Cassidy urged delaying a scheduled meeting with the Advisory Committee on Immunization Practices, noting the absence of a CDC Director.  This comes after Cassidy previously questioned Kennedy's vaccine skepticism but ultimately agreed to vote for him following Kennedy's promise not to dismantle vaccine safety systems.   Senator Murkowski's Independence Signal  In a revealing podcast appearance, Senator Lisa Murkowski suggested she might consider becoming an independent and potentially caucusing with Democrats under certain circumstances. The Alaska Republican, a known Trump critic, emphasized that her "allegiance is not to the Republican Party" but to Alaskans.  When asked about a scenario where Democrats win Senate seats in 2026 and offer support for Alaskan priorities in exchange for caucusing, Murkowski acknowledged "there may be that