US President Joe Biden has signed a $700bn (£579bn) bill that aims to fight healthcare costs and climate change while raising taxes mainly on the rich.
The act includes measures to make good on decades of congressional promises to curb the price of prescription drugs.
The final version is more modest in scope than the $3.5tn package first envisaged by Democrats.
A flagship of Mr Biden’s agenda, the bill could provide a boost ahead of the mid-term elections.
Voters casting their ballots in November will decide whether Mr Biden’s Democrats retain control of Congress for two more years.