Mayor Julian Castro, U.S. Secretary of Labor Thomas Perez, and other top Democrats will rally at San Antonio College today to try to deal with the most serious threat to the viability of Obamacare, and it is not Sen. Ted Cruz (R-Texas) and his threats to defund the program.


  The rally will be the first of several events nationwide in coming weeks, designed to convince young people to buy health insurance that many of them don't feel that they need.


  "We will be focusing on the so called 'young invincible," U.S. Rep Lloyd Doggett (D-San Antonio) told 1200 WOAI news.  "Because young people have a significant amount to gain in participating in this opportunity."


  Many young people disagree.  Forcing healthy people in their twenties to buy expensive health insurance that they will never need is the pillar that holds up the entire economic structure of the Affordable Care Act.  It is not only the payoff to the insurance companies, it is the only way new mandates included in Obamacare, like the end of lifetime limits on coverage and laws which bar insurance companies from refusing to sell health insurance to an individual with pre-existing conditions, can work.


  Doggett says the 'young invincible' will be told of numerous subsidies available to help them purchase coverage.


  "They tend to have lower incomes and will qualify for significant tax credits," he said.


  But many young people say the tax credits and other subsidies will only cover a portion of the costs they will have to pay to purchase health insurance which is at the level required by Obamacare.  The 'individual mandate' calls fro tax penalties for people who refuse to purchase insurance, but many of those penalties are based on a person's income.  And since people in their twenties have a tendency to have lower incomes, many are simply opting to pay the penalty instead of buying insurance.


  Others say they will fly under the radar, accepting only cash jobs and attempting to evade notice by the IRS.