Medicaid Expansion Might be a Good Thing

http://news.yahoo.com/medicaid-expansion-key-part-affordable-care-act-130207220.html
I think Medicaid expansion is a good thing because more uninsured Americans will now qualify for Medicaid in hope to fill in the gaps in coverage. However, I agree that this might make it difficult for current medicaid insured  because increase in patients could mean longer wait time for appointments. I like the fact that the Affordable Care Act is looking into provisions to attract physicians serving Medicaid population. It's a give and take situation. Do you agree, however, that the provision of Affordable Care Act is unconstitutional?