In his latest column for the New York Times, Paul Krugman pushes back on what he calls the right's truly "lousy" argument against Obamacare and its provision to expand Medicaid access for the poor.

"And I don't just mean lousy as in 'bad'; I also mean it in the original sense, 'infested with lice,'" Krugman writes.

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After saying "sheer spite" is the only real reason that some states have rejected Obamacare's Medicaid expansion, Krugman goes on to claim that opponents of the bill nonetheless require "intellectual cover." And that's where the "lousy" argument comes in: