May 24, 2011 11:23AM 

# Tuesday Links 

By George Scoville 

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- “Vouchers and tax credits differ from one another in important ways, and Pennsylvanians deserve to have their representatives [consider them one at a time](http://articles.mcall.com/2011-05-23/opinion/mc-school-vouchers-schaeffer-yv-20110521_1_school-vouchers-voucher-program-education-tax).”
- “So, if the Supreme Court’s precedents defer to Congress’ assessments of its powers, but Congress is relying for ‘constitutional authority’ on the Supreme Court’s precedents, then [NO ONE is actually looking at the Constitution itself](http://washingtonexaminer.com/opinion/op-eds/2011/05/tort-reform-and-gops-fair-weather-federalism) to see if a bill is within Congress’ enumerated powers.”
- “Carbon dioxide, thought to be a significant cause of the warming of surface temperature since the mid-1970s, is currently the respiration of the world’s economic civilization. Getting rid of it [isn’t as simple as banning CFCs and switching to another refrigerant](http://blogs.forbes.com/patrickmichaels/2011/05/19/sound-fury-and-the-policy-of-climate-change/).”
- “As Arthur Schlesinger Jr. explained in his book of that name, the presidency’s transformation from limited, constitutional office to [Supreme Warlord of the Earth](https://www.cato.org/pub_display.php?pub_id=13132) has been ‘as much a matter of congressional abdication as of presidential usurpation.’ ”
- [It’s the expenditures](http://www.youtube.com/watch?v=jAbLvGAFH2w), stupid:

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