It is unconstitutional. One of the findings that a judge has to make before he puts anyone in jail for failing to pay child support is that the defendant either:
1) Has the present ability to make the payment; or,
2) Would have the present ability to make the payment but for a deliberate or reckless suppressing of his income or assetts; or,
3) He had the ability to make the payment when it was due or since it became due, but failed to make the payment.
I am sure many conventional credit card debtors would fail this test. Its all in the 'priorities' (bankruptcy sense). So this test is in effect, usless, dont you think?