Trump's top immigration official claims an internal investigation found that Congresswoman Ilhan Omar 'married her brother' and could be facing deportation.    

'We know that she married her brother to try to bring him into the United States,' Department of Homeland Security Secretary Markwayne Mullin said of the Minnesota Democrat. 'We know he lives now in London.'

He was speaking about the second man Omar married, who the Daily Mail has previously reported is Ahmed Elmi. Both are originally from Somalia. 

She allegedly was still married to her first husband, Ahmed Hirsi, at the time of the second marriage, the congresswoman has told friends who relayed the account to the Daily Mail. 

Omar has long denied the allegations. She has since remarried a third time and is wed to political consultant Tim Mynett. 

Mullin told conservative pundit Benny Johnson that Omar's actions amounted to 'possible illegal activity' and the investigation is 'ongoing,' breaking a standard where officials typically do not discuss active investigations. 

'We're investigating,' he said before threatening to deport her should the investigation warrant such a dramatic action. 

'There's no expiration to that,' he said of the potential charges. 'If we can prove it that, maybe you shouldn't have been here in the first place, we'll deport you.' 

Mullin appeared to be alluding to potential immigration documents being falsified, which would be a deportable offense. That plan could face difficulty given Omar became a naturalized US citizen in 2000, when she was 17.

Her office did not immediately respond to the Daily Mail's request for comment on Mullin's latest claims. 

Abdihakim Osman, a past friend of Omar, told the Mail in 2020 that Omar said she wanted to get her brother papers so he could stay in the United States, at a time when she was married to her first husband Ahmed Hirsi.

But hardly anyone realized that meant marrying him.

'No one knew there had been a wedding until the media turned up the marriage certificate years later,' Osman exclusively told Daily Mail at the time. 

Omar married her first husband, Hirsi, in 2002 in a Muslim ceremony that, like many in the immigrant community, was not registered with the state.

The first report that Omar and her husband were siblings appeared on the website Somalispot in 2016.

It said of Elmi: 'As soon as Ilhan Omar married him he started university at her alma mater North Dakota State University where he graduated in 2012.'