Analysis of the Lieberman-Warner Climate Security Act of 2008

The Lieberman-Warner Climate Security Act of 2008 was debated in the Senate in early June 2008. This page pulls together various resources on the bill, including insights from economic modeling analyses, a bill summary and quick reference guide to the bill, as well a daily update on debate proceedings. Bookmark this page to easily access key material about the Lieberman-Warner bill.

Eileen Claussen shares her thoughts on last week's Senate activity on the Lieberman-Warner Climate Security Act (June 12, 2008)

Quick Reference Guide:

On June 6, 2008, for the first time, a majority of the United States Senate signaled its support for mandatory climate action and, in particular, greenhouse gas (GHG) cap-and-trade.

Specifically, the Senate voted on whether to end debate (i.e., to “invoke cloture”) on the Boxer substitute to S.3036, the Lieberman-Warner Climate Security Act, a bill that would establish a GHG cap-and-trade program and other measures to reduce U.S. GHG emissions. Had the motion passed, the Senate would have moved to a post-cloture debate on the bill, followed by a vote on the substitute itself. The motion received only 48 votes, with 36 voting against, falling short of the 60 votes required to invoke cloture. In addition to the 48 yes votes, six Senators who were absent – including presumptive presidential nominees McCain (R-AZ) and Obama (D-IL) – entered statements into the record saying they would have voted for cloture had they been present.

Not every vote for this procedural question can be read as support for the bill itself. In particular, 9 of the Democrats who voted for cloture shortly afterwards sent a letter to Majority Leader Reid (D-NV) and Sen. Boxer (D-CA) stating their opposition to the bill in its current form and listing the issues that would need to be resolved to win their support. Nevertheless, it is generally understood that the 54 Senators put themselves on record in support of greenhouse gas cap-and-trade. Moreover, seven of the Senators who either voted against cloture or remained silent on the vote have either cosponsored or voted for previous GHG cap-and-trade bills.

Today’s vote shows that the next President will come to office with a majority of support in the Senate for GHG cap-and-trade, and very possibly with the 60 votes needed for passage for the right bill.

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