Wall Street Journal reports the Omar inquiry is aimed at her citizenship, with a Minnesota grand jury and more than a dozen subpoenas

The Omar investigation now has a stated destination in reporting: not only a criminal probe, but an effort to take away the citizenship she has held since 2000.

The Wall Street Journal reported on Wednesday, citing American officials and people familiar with the investigation, that the administration is investigating Rep. Ilhan Omar in order to revoke her citizenship and eventually deport her. The inquiry centres in part on how she obtained citizenship after arriving in the United States as a refugee from Somalia. Investigators have examined her family's immigration records and issued more than a dozen subpoenas, including to relatives, seeking testimony before a grand jury in Minnesota, the Journal reported. That matches the subpoena reporting this site carried on October 14, including a subpoena to her sister Sahra Noor.

The Journal also filled in Monday's search. Federal agents who searched her Washington home took her passport, mobile phone, personal computers and notebooks, according to people familiar with the search. United States Attorney Jeanine Pirro, whose office is separately examining Omar's financial disclosures, has said a judge signed the search warrant, which requires probable cause. Omar arrived in the United States in 1995 after time in a refugee camp in Kenya and became a citizen in 2000. The age question reported earlier remains at the centre of the citizenship theory: whether she was 17 or 18 when her father naturalized decides whether citizenship passed to her automatically under the law then in force.

Omar's office rejected the investigation as baseless in remarks to the Journal. She has called the search an escalation against a political opponent and says she will not be silenced. She is seeking a fifth term from Minnesota's 5th district in the November 3 elections. A subpoena, a search warrant and a denaturalization inquiry are investigative and civil steps, not findings. No charges have been announced as of October 15, and citizenship can only be revoked by a court.