Colorado is preparing to expand health assistance for low-income adults, and Democratic lawmakers indicated Thursday that they're not going to entertain GOP attempts to put curbs on that expansion. The Senate Education Committee rejected a GOP proposal to make K-12 education a higher priority than looming Medicaid expansion. The 5-4 party-line vote was the first indication that state lawmakers are going along with Gov. John Hickenlooper's decision to expand Medicaid as part of the federal health care law.