Conservatives have two main arguments about the Employee Free Choice Act. One is that it would “eliminate the secret ballot,” which is false. It would put the decision about what election method to use in a unionization process in the hands of workers, rather than in the hands of corporate executives. Their other argument, which is true, is that it would lead to more union organizing. This, they think, is a terrible ill destined to wreck the economy. I would beg to differ, and the Economic Policy Institute has put together a group of economists who likewise beg to differ, including some blogosphere favorites, Nobel prize winners (but not Paul Krugman?), and even Jagdish Bhagwati who some people think is a conservative.
UPDATE: Apparently the Times doesn’t permit its writers to sign petitions, which would of course explain why Krugman didn’t sign. I can see why you would apply that rule to news reporters, but it’s a little odd for columnists.