A key provision included in the law will raise the cap on the State and Local Tax (SALT) deduction to $40,000.

The bill is deeply unpopular - with nearly 2-to-1 opposition, according to a Washington Post-Ipsos poll conducted in June.

US President Donald Trump is to sign his landmark policy bill into law, a day after it was narrowly passed by Congress. The signing event at the White House on Friday afternoon, coinciding with 4 July celebrations, enacts key parts of the Trump agenda including tax cuts, spending boosts for defence and the immigration crackdown.