美国共和党参议员在6月6日阻挠通过了一项法案，该法案将限制遍及美国企业和消费经济的二氧化碳排放量，并可能在许多矿物燃料的使用上引发新税种，其中包括波特兰水泥的生产。 该利伯曼-华纳气候安全法案提出通过定量配给上限二氧化碳排放量，政府将发行或出售给企业和机构煤燃烧产生气体的份额。
波特兰水泥消费者反对承担因生产而产生气候变化的生产制约费用，以及对此的立法建议。该法案以36比48的投票率而没能通过最后的辩论和发言，因此利伯曼-华纳很可能明年重新拟订一个类似形式的草案提交给新的国会。 与气候变化有关的法案是美国国会的棘手问题，波特兰水泥协会的华盛顿工作人员说，他们会努力维护会员公司的利益来保护国家实力，并让国会议员知道一个生机勃勃的水泥工业对美国经济体系的重要性。
附英文：
Republican senators blocked passage on June 6 of a bill that would limit carbon
dioxide emissions across the U.S. business and consumer economy, and likely
spawn new taxes on myriad fossil fuel uses, including portland cement production.
The LiebermanWarner Climate Security Act envisions capping carbon dioxide
emissions through allowances the federal government would issue or sell to
businesses and agencies generating the gas through coal-combustion.
Portland cement customers stand to bear cost burdens tied to production
constraints typical of climate change legislative proposals. By failing in a 48-36
vote to bring the bill to final debate and floor, the Lieberman-Warner measure
is presumably set for reintroduction next year in similar form to a new Congress.
With climate change legislation a front-burner issue on Capitol Hill, Portland
Cement Association's Washington staff members note that they have aggressively
pursued member company interests to protect domestic capacity, and educate
lawmakers on the importance of a vital cement industry to the American economy.
