These days, however, the main problem comes from the right - from conservatives who, unlike most economists, really do think that the free market is always right - to such an extent that they refuse to believe even the most overwhelming scientific evidence if it seems to suggest a justification for government action.
We have a lot of evidence on what happens when you raise the minimum wage. And the evidence is overwhelmingly positive: Hiking the minimum wage has little or no adverse effect on employment while significantly increasing workers' earnings.
America's political landscape is infested with many zombie ideas - beliefs about policy that have been repeatedly refuted with evidence and analysis but refuse to die. The most prominent zombie is the insistence that low taxes on rich people are the key to prosperity.
Evidence and expertise have a well-known liberal bias.
Follow AzQuotes on Facebook, Twitter and Google+. Every day we present the best quotes! Improve yourself, find your inspiration, share with friends
or simply: