Some American states, impatient with legislative gridlock in Washington, have set aggressive goals of their own, aiming for 20 or 30 percent renewable energy as soon as 2020.

美国的一些州对华盛顿的立法僵局失去了耐心，已经自行设立了雄心勃勃的目标：在2020年之前就要让可再生能源对电力供应的贡献率达到20%至30%。

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There are concerns that a democratic Lords could challenge the primacy of the Commons and lead to legislative gridlock.

ECONOMIST: More Liberal Democrat woe

European sovereign debt, the still weak labor market, the U.S. federal deficit and potential legislative gridlock were the most commonly cited negative factors.

FORBES: Investor Confidence Remains High

But sometimes a centre-left majority holds sway in the Parliament on environmental or civil liberties issues, and in such cases there is often legislative gridlock, Votewatch says.

BBC: EU votes show strong UK dissent - Votewatch study