Democrats secure breakthrough with Kyrsten Sinema on climate bill

The Arizona senator said she had agreed to last-minute changes on the measure's tax and energy provisions

Senate Democratic leaders say they have reached an agreement on the party's major $739bn climate and economic bill with Kyrsten Sinema - the centrist Democrat whose opposition remained a major hurdle to passing the most ambitious US climate legislation yet.

The support of Sinema, a former member of the Green Party who has evolved into one of Congress' most conservative Democrats, was crucial to the passage of the bill, which tackles energy, environment, health and tax measures. Its success is seen as the Democratic party's most substantive chance to deliver domestic policy progress before the midterm elections.