President-elect Donald Trump has vowed to end automatic citizenship for anyone born in the US, starting on his first day back in office next month.
"We have to end it. It's ridiculous," he told NBC's Meet the Press in his first broadcast network interview since winning November's election.
In the wide-ranging interview, recorded on Friday, Trump also said he would pardon those involved in the 2021 Capitol riot and promised to issue "a lot" of executive orders on day one, including on the economy, energy, and immigration.
The Republican also reiterated his mass deportation plans for undocumented immigrants living in the US, but offered to work with Democrats to help those who arrived as children.
While he suggested he would not seek a justice department investigation into Joe Biden after he is inaugurated on 20 January, he said that some of his political adversaries, including lawmakers who investigated the Capitol riot, should be jailed.
Trump was asked whether he would seek to pardon the hundreds of people convicted of involvement in that riot, when supporters of his stormed Congress three months after his defeat in the 2020 election.