Has John McCain said how his "plan" for health care will protect people who have insurance...

[ck4829]

And yet still have to declare bankruptcy because their bills are too high?

[amdezurik]

1. you think he is aware it happens?

doubtful...

[DutchPointer]

2. you think he is aware it happens?

Of course McCain knows that you lose your insurance in a case of bankruptcy and you have no chance to become insured again.
1 you can't pay for it;
2 you are too risky because bankruptcy is a far from healthy event.
McCain's concern is: how can a insurance company make and maximize profit? You have to insure that a steady stream of money comes from you and that it is very unlikely that you claim more than you pay.