Michael Barone:

Public-sector unionism is a very different animal from private-sector unionism. It is not adversarial but collusive. Public-sector unions strive to elect their management, which in turn can extract money from taxpayers to increase wages and benefits -- and can promise pensions that future taxpayers will have to fund.

The results are plain to see. States such as New York, New Jersey and California, where public-sector unions are strong, now face enormous budget deficits and pension liabilities. In such states, the public sector has become a parasite sucking the life out of the private-sector economy. Not surprisingly, Americans have been steadily migrating out of such states and into states like Texas, where public-sector unions are weak and taxes are much lower.

Barack Obama is probably the most union-friendly president since Lyndon Johnson. He has obviously been unable to stop the decline of private-sector unionism. But he is doing his best to increase the power -- and dues income -- of public-sector unions.

One-third of last year's $787 billion stimulus package was aid to state and local governments -- an obvious attempt to bolster public-sector unions. And a successful one: While the private sector has lost 7 million jobs, the number of public-sector jobs has risen. The number of federal government jobs has been increasing by 10,000 a month, and the percentage of federal employees earning over $100,000 has jumped to 19 percent during the recession.

Obama and his party are acting in collusion with unions that contributed something like $400,000,000 to Democrats in the 2008 campaign cycle. Public-sector unionism tends to be a self-perpetuating machine that extracts money from taxpayers and then puts it on a conveyor belt to the Democratic party.