Trump presidency could scupper some of Barack Obama’s signature achievements, including Obamacare, climate change policy and the nuclear deal with Iran.
Democratic hopes of shaping the Supreme Court for a generation would be dashed; a markedly more conservative court is now likely. Foreign policy could also undergo a dramatic shift.
Here are seven ways in which life could change under a President Donald Trump.
- Trade Trump has opposed the proposed Trans-Pacific Partnership deal and called for fundamental changes to the Nafta pact with Mexico and Canada. Such policies appear to have boosted his appeal throughout the rust belt of the Midwest, with huge consequences for the election’s ultimate outcome. He has also threatened to impose punitive 45 per cent tariffs on goods from China, stoking fears of a trade war.
- Foreign policy According to Trump, President Obama’s deal with Iran, which seeks to prevent the Islamic Republic from attaining nuclear weapons, would be dismantled or at least restructured. While Mr. Obama began his term by setting out a vision of a world without nuclear weapons, Mr. Trump has said he would be open to both Japan and South Korea developing nuclear arsenals. He has also questioned the US’s treaty commitments to Nato allies that do not pay their own way while suggesting a much closer relationship with Russian President Vladimir Putin.
- Healthcare The US President – elect had promised to abolish and replace Obama’s Obamacare reforms and instead set out a comprehensive alternative but says he will encourage competition between markets in different states.
- Tax policy Trump had pledged to cut taxes across the board. He says no American business would pay more than 15 per cent of their profits in tax, compared with a current maximum of 35 per cent. The top rate of tax would fall from 39.6 per cent as the Republican reduces the number of tax brackets.
- Supreme Court With the highest court in the land currently split 4-4 between conservative and more liberal judges, Hillary Clinton’s supporters had hoped that a ninth justice chosen by a Democratic president would shift the balance, possibly for a generation. Instead, Mr. Trump faces relatively easy confirmation of his pick by a Republican Senate and he may also have the opportunity to replace some of the relatively elderly complement of liberal judges.
- Climate change Trump has called global warming a hoax invented by China to make US manufacturers uncompetitive and vowed to “cancel” the Paris climate agreement, which built on a deal Mr. Obama struck with China. He also says he would stop all US payments for UN global warming program.
- Immigration Mrs. Clinton and departing Mr. Obama had backed comprehensive reforms that would give illegal immigrants a chance at full citizenship. Mr. Trump has campaigned on his pledge to build a wall on the Mexican border, called for a ban on Muslim immigration and the deportation of 11m unauthorized immigrants.