The bill will fund Trump's immigration crackdown, make his 2017 tax cuts permanent, and could knock millions of Americans off health insurance.

In a speech from the White House balcony facing the South Lawn, Trump thanked Republican lawmakers who helped usher the bill to his desk. He touted the tax cuts in the bill, brushing aside criticism of the impact to social programmes such as food assistance and Medicaid.

At a Fourth of July White House picnic, President Donald Trump signed a major tax and spending bill, celebrating its passage through the Republican-led Congress.