Ihlan Omar is the 37-year-old Somali-born US congresswoman - one of only two Muslim women ever elected to Congress - who's become a thorn in President Trump’s side and on the receiving end of his temper. Omar was one of four congresswomen Trump told to “go back” to where they came from. So who is Ilhan Omar, why has she got the President’s back up - and what's he really up to in targeting her? Mark Coles has been finding out.

Thank you to Norah Shapiro for use of clips from her documentary 'Time for Ilhan'.

Researchers: Khadidja Ndiaye and Kirsteen Knight