Trinidad and Tobago-born rapper Nicki Minaj declared herself to be Donald Trump's "number one fan" on Wednesday, while also showing off her Trump "gold card" visa, which offers applicants residency and a path to US citizenship.

The US President called the star up on stage in Washington DC after she announced her support for the so-called "Trump Accounts", which provide trust funds for children.

Previously a critic of Trump's hardline immigation policies, Minaj - who has said she came to the US with her parents as a child - has praised his leadership in recent years.

It comes at a time of protests after Immigration and Customs Enforcement (ICE) agents were involved in the fatal shootings of US citizens.

"I will say that I am probably the president's number one fan, and that's not going to change," said Minaj, who was seen holding hands with Trump on the podium.