Some 84 percent of people age 55-64 have pre-existing health conditions.[8] Under the House bill, insurers could charge older consumers premiums that are five times higher than younger consumers, and older people would also receive smaller subsidies than they do today to help them afford insurance. For example, a 60-year-old woman with $22,000 of annual income who faced the national average benchmark premium would pay $8,200 more in premiums after tax credits than she does now.[9] The Congressional Budget Office projects that uninsured rates for people age 50-64 would double due to the House bill.[10]
Moreover, high-risk pools are only intended to serve those with the most serious health conditions. Many older people have pre-existing conditions like hypertension and asthma that likely would not qualify for high-risk pools.
http://www.cbpp.org/research/health/8-billion-comes-nowhere-close-to-meeting-republican-commitments-to-people-with-pre