The Senate Finance Committee’s rejection of two public option amendments has set off a flurry of other proposals that could upend the reformed health care system imagined in the Chairman Max Baucus’s original bill. Earlier today, Democratic Senator Maria Cantwell introduced an amendment that would empower states to set up their own insurance pools of low-income residents, negotiate with insurers on their behalf and purchase coverage outside the exchanges, which are marketplaces for private insurance. Cantwell’s amendment passed 12 to 11 with Democrat Blanche Lincoln voting with the committee’s Republicans against it. The amendment, modeled after a system already operating in Cantwell’s home state of Washington, is a fairly radical proposal and has already sparked a fierce reaction from Republicans.