NO ENFORCEMENT
Paris accord meaningless
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"But it does not impose specific emission-reduction requirements on governments or even require them to meet their own “nationally determined” commitments."
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"The administration of U.S. president Barack Obama has adamantly opposed any binding language in those areas, arguing such requirements would require ratification from the Republican-led Congress."
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"But even the “binding” aspects of accords have no enforcement mechanism or penalties for failing to meet them."
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Paris climate accord marks shift toward low-carbon economy  - Eric Reguly and Shawn McCarthy - Globe and Mail - Dec 13, 2015