Jared Kushner

Mr Kushner, a senior adviser to the president, had been receiving top-secret security briefings.

However, background checks into Mr Kushner had still not been completed, so he had interim clearance only.

He and other White House aides who have yet to receive permanent clearance will not now get top-secret briefings.

Mr Kushner, who is married to Mr Trump's daughter Ivanka, had access to the President's Daily Brief, a secret intelligence report.

His gender is listed as "female" in records from the New York State Board of Elections, according to screen grabs published by Wired.

The images suggest Mr Kushner, who is a senior adviser to the president, registered to vote in November 2009.

The former property investor has not commented on the news, so it remains unclear how the error occurred.

The mistake is unlikely to constitute voter fraud, as that requires the culprit to deliberately give false information.

Mr Kushner, now a senior White House adviser, has emerged from his closed-door appearance at a US Senate panel probing alleged Russian meddling in last year's US presidential election.

The committee spoke to him about about a meeting he attended a year ago between Mr Trump's eldest son and Russian lawyer who promised damaging information about their election rival, Hilary Clinton.

Mr Kushner said he had provided the senate panel, the first of two committees he will speak to this week, with all documents requested.

Mr Kushner has volunteered to speak to the Senate Intelligence Committee, the White House said.

It is examining Russia's alleged interference in last year's election.

The US intelligence community believes alleged Russian hacking during the presidential election was done to help Mr Trump defeat Hillary Clinton.

Russia denied the allegations and President Trump has branded the story "fake news".

There are two congressional investigations into the issue, plus an FBI one.

The 35-year-old played a key role in the presidential campaign and his new White House job will cover both domestic and foreign policy.

Mr Kushner, who is married to Ivanka Trump, is a property developer with a wide range of business interests.

Democrats immediately called for a review of the appointment, citing nepotism laws and potential conflicts.

Members of the House Judiciary Committee urged the Department of Justice and the Office of Government Ethics to step in.