US President Donald Trump has signed his landmark bill into law, a day after it narrowly passed Congress.


The signing ceremony at the White House on Friday afternoon put into effect some of Trump's key agenda items—including tax cuts, increased defense spending and a crackdown on immigration.


The signing ceremony, which took place before Independence Day fireworks and a military picnic, was a festive affair at the White House. The picnic was attended by pilots who recently attacked three nuclear facilities in Iran.



Trump told his supporters that the law would boost economic growth. But he will now have to convince many Americans who are skeptical about some parts of the bill, as polls show that many do not like some of its aspects.


Some members of his own Republican party also oppose it, saying it could further increase the U.S. debt. Democrats, on the other hand, have warned that the bill would benefit the rich and hurt the poor.


The bill passed the House of Representatives on Thursday afternoon by a vote of 218 to 214 after a long session on Capitol Hill. It had earlier passed the Senate by a narrow margin of just one vote on Tuesday.


Trump had given the Republican-controlled Congress a July 4 deadline to send him a final version of the bill so he could sign it into law.


The Congressional Budget Office (CBO) has predicted that the bill could increase the US budget deficit by $3.3 trillion (about £2.4 trillion) over the next 10 years and leave millions of people without health insurance — although the White House disagrees with that prediction.