Democrats offered a slew of amendments, all of them rightly rejected. If you already think the American Health Care Act is ObamaCare Lite or ObamaCare 2.0, the last thing you want to do is let the Democrats make it even more so. (Then again, if it really was just as bad as ObamaCare, why wouldn't Democrats be happy to see it pass as is?)
Congressman Joe Barton offered, but then withdrew, an amendment that would have sped up the reversal of ObamaCare's Medicaid expansion. That doesn't mean it couldn't be proposed in a Senate version - although that seems unlikely - or in the future Phase 3 that can't be passed by a simple majority via reconciliation. It means Republicans don't think they can get 50 votes for this phase if the include it, and with Susan Collins, Lisa Murkowski and Cory Gardner holding down the GOP's left flank, they may be right.