Breaking: Trump to replace chief of staff with hardline deputy Stephen Miller - ABC News & Headlines – Australian Broadcasting Corporation

One lesson from Donald Trump's America is that doing dumb things doesn't end well. (AP: Alex Brandon)

Donald Trump has announced that his chief of staff, Susie Wiles, will be replaced by her hardline deputy, Stephen Miller, on Monday.

The US President made the announcement on Friday, local time, in a social media post.

Mr Trump thanked Ms Wiles for doing an "outstanding job" and said she would move to a different role in his "political operation".

In reality, the switch sidelines one of his most senior staff members.

Analysts have widely speculated Mr Trump will reshuffle his administration after his Republican Party's disastrous performance at this week's midterm elections.

Mr Miller is best-known as the architect of the Trump Administration's immigration crackdown.