President Barack Obama on Wednesday encouraged supporters in Dallas to help lobby Gov. Rick Perry (R) to expand Medicare in Texas, one of several states that refused the opportunity to expand insurance coverage to nearly a million of its poor citizens under the Affordable Care Act.

Obama said he was frustrated with “folks who are complaining about how the websites not working … and yet they’re leaving a million people right now without health insurance, that they could immediately fix.”

Obama said that Texas would greatly benefit from Medicaid expansion.

“There’s no state that actually needs this more than Texas,” he said during a speech at Temple Emanu-El in Dallas.

“I’m going to be with you the entire way until we get this done,” he added.