Here's what doctors think about the updated Obamacare replacement plan

It looks like House Republicans' Obamacare replacement plan is getting another shot. 

On Wednesday, the conservative House Freedom Caucus came on board with the latest version of the American Health Care Act, the bill that aims to repeal and replace the Affordable Care Act. The group originally did not support the bill. 

The bill now includes a new addition, called the MacArthur amendment. The amendment would allow states to receive waivers to avoid some of the regulations set up under the ACA.

When the original AHCA debuted, more than half a dozen doctors' organizations, hospital groups, and patient advocacy groups expressed their concerns with the bill. Now, with the new amendment, some organizations are speaking out again.