Here is an odd one, even the ultra liberal
Slate endorses the plan supported by Huckabee.
Also, this is not Huckabee's plan, as it is often quoted. It's a plan that he supports. He is a governor, and the bill was introduced in the House of Reps as HR 25, (with the Senate having it as S 1025 if/when passed by the house - the Senate is not permitted to originate any sources of revenue under the Constitution, although that has never stopped the likes of Ted Kennedy and Hillary Clinton - and it's alarming how many new senators have no clue about the Constitution and are dismayed to find out they cannot raise taxes). Anyway, the last time I checked, governors were not allowed to introduce or co-sponsor bills in the US Congress. They can, however, support those bills just as you and I can support those bills.
Back to the ignorance of the Senators, if they had even read Article 1 of the Constitution, they would know they cannot originate taxes. Unfortunately, most Senators apparent never even made it that far in their efforts to properly govern. Article 1, Section 7, first line:
All bills for raising Revenue shall originate in the House of Representatives; but the Senate may propose or concur with Amendments as on other Bills.Of course, Presidents cannot originate, or for that matter, change taxes, either. Presidents (and governors as private citizens, for that matter) can support tax bills, but that's it. So, when you have a candidate running for the senate running in your state, and he/she is talking about raising/changing taxes, you know you have a moron on your hands.