Let's look at the numbers:
U. S Population: 307 millionTotal Uninsured: 47 millionNot enrolled: 14 millionEarning over $75k: 10 millionIllegal Immigrants: 9.4 million
Using these numbers, one sees that there are 13.6 million people who are currently uninsured, or 4.4% of the citizens of the US. It is up to you to decide if the $1.4 trillion estimated to be required for an overhaul of the healthcare system is cost effective.