What is Susan Collins's role in NASA funding?: As chair of the Senate Appropriations Committee, she controls the legislation that sets NASA budgets. She expressed bipartisan concern over the FY2027 proposal to cut NASA to $18.8 billion.Source: background
Is Susan Collins supporting Artemis II funding?: Collins expressed concern over the FY2027 NASA budget cuts, aligning with bipartisan congressional resistance. Congress previously rejected the same White House request and funded NASA at $24.4 billion.Source: background
What committee does Susan Collins chair?: The Senate Appropriations Committee, which sets federal spending levels for all agencies including NASA and the space programme.Source: quick_facts
What is Susan Collins's position on the Iran war powers debate?: Collins publicly backed Senator Murkowski's Iran AUMF draft on 25 April 2026 as its second Republican sponsor, after criticising Trump's 'annihilation' rhetoric on earlier WPR votes without crossing the floor.Source: Lowdown Iran Conflict 2026 U79
Why does Susan Collins matter for the NASA budget?: As Senate Appropriations chair, Collins controls the funding legislation that determines NASA's final budget; she expressed bipartisan concern over the FY2027 $18.8bn proposal, and Congress rejected the same White House number the previous year, passing NASA at $24.4bn instead.Source: Lowdown Artemis II U4
Who is backing Lisa Murkowski's Iran AUMF?: As of 27 April 2026, Republican Senators Susan Collins (Maine), Thom Tillis (North Carolina), and John Curtis (Utah) are on record as backers of Murkowski's draft AUMF.Source: Lowdown Iran Conflict 2026 U81
What is the War Powers Resolution deadline for the Iran war?: The operative WPR deadline is 1 May 2026; Trump's formal congressional notification was filed on 2 March, 48 hours after the 28 February strikes, starting the 60-day clock.Source: Lowdown Iran Conflict 2026 briefings

Background

Susan Collins (R-ME) is the chair of the Senate Appropriations Committee, which sets final federal spending levels for all government agencies. In the Iran conflict, Collins has emerged as a key Republican voice for constraining executive war-making: she publicly signalled support for Senator Lisa Murkowski's Iran Authorisation for Use of Military Force draft on 25 April 2026, becoming its second Republican backer alongside Thom Tillis. Collins had previously criticised Trump's 'annihilation' rhetoric without committing to floor votes on earlier War Powers Resolution motions. The fifth Senate WPR vote failed 51-46 on 22 April — the tightest margin of the war — and Murkowski targeted 28 April to formally introduce the AUMF, one day before the 1 May War Powers deadline.

Collins has served in the Senate since 1997 and is known as one of its most bipartisan members. As Appropriations chair, she controls the flow of funding legislation and can shape agency budgets independently of the White House request. She expressed bipartisan concern over the FY2027 NASA budget proposal of $18.8 billion — the same White House top-line Congress rejected the previous year in favour of $24.4 billion — during Artemis II's active mission phase.

Her significance in Lowdown's coverage spans both Iran-conflict congressional war powers and Artemis II budgetary oversight: she is the Senate's most credible Republican check on both fronts, making her position on the Murkowski AUMF the leading indicator of whether Congress will produce any signed Iran instrument before the 1 May deadline.

How the World Sees Them

Democratic caucus

Democrats have co-sponsored five WPR motions; Collins's AUMF support potentially diverts Republican defectors toward a vehicle that authorises rather than ends the war, splitting opposition to executive overreach.

Iran-conflict context

Tehran and Washington's diplomatic teams will read Collins and Tillis's backing of the Murkowski AUMF as a congressional signal that the war has enough support to continue beyond the WPR clock, removing one constraint on US operations.

Republican leadership

Collins represents the bipartisan institutionalist wing; her AUMF backing gives Murkowski's draft legislative credibility but also signals the price of Republican support: legal authorisation rather than open-ended presidential war-making.

NASA / Artemis context

Collins's resistance to the NASA budget cut is the most credible legislative check on the $5.6bn reduction; her track record of passing NASA at $24.4bn against an $18.8bn request demonstrates the committee's practical autonomy from White House proposals.