ABC's This Week host George Stephanopoulos passed on the opportunity to question Republican presidential candidate Gov. Scott Walker about how his health care plan would harm low-income Americans. Stephanopoulos failed to question Walker on this topic despite mainstream media outlets highlighting the issue in articles detailing Walker's plan.

On August 18, Walker revealed his plan to replace the Affordable Care Act if he is elected president. A key feature of his plan is to issue tax credits based on age rather than income to help Americans purchase health insurance plans, but mainstream media outlets quickly detailed how this change would hurt the ability of low-income Americans to afford robust health insurance coverage.

The Upshot blog from The New York Times explained how Walker's plan is “much less concerned about ensuring health care access for the poor,” and “appears to be less generous for many poor Americans”:

Governor Walker's plan appears to be less generous for many poor Americans. It would roll back the Medicaid expansion that has provided free insurance to low-income adults. It would distribute tax credits to those with private coverage on the basis of age, not income.

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But it means that for people without a lot to spend on insurance, a comprehensive health plan may slip back out of reach. For others, an affordable plan might be so bare-bones that it wouldn't kick in before a major health catastrophe.

Wealthier people, on the other hand, could fare better under this plan, as long as they're healthy. They would get more federal money to buy insurance plans, and they would have the choice of buying cheaper, less comprehensive plans than those offered under Obamacare rules.

Vox highlighted the detrimental impact Walker's plan would have on the poor and demonstrated how an age-based tax credit plan could help the rich while hurting low-income earners of the same age:

For high earners, this might be great. Under Walker's plan, Taylor Swift would get $1,200 to help buy coverage because she's 25, while Obamacare would give her nothing on the grounds that she's superrich. For lower-income people, this is a lousy deal: A 25-year-old earning $17,000 at a low-wage job would get a $1,962 credit under Obamacare.

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A world in which Obamacare is repealed, and the Walker plan enacted, is one in which the individual market is friendlier to higher-income, healthy shoppers -- but likely worse for the poor and the sick, both those seeking private coverage and those on Medicaid.

Instead of questioning Walker about this pressing problem with his health care plan, harming the ability of low-income Americans to afford quality health insurance compared to Obamacare, Stephanopoulos only asked him about criticism from an opponent, Gov. Bobby Jindal (R-LA), about the cost of his plan and how he would fund it. Watch: