CHICAGO: A federal investigation into how Ilhan Omar, a member of Congress from Minnesota, obtained US citizenship has raised questions about whether she, or her late father, misrepresented her age on immigration documents. If proven, the allegations could expose her to criminal charges, denaturalization and possible deportation. Federal agents searched her Washington home on Oct. 12, just weeks before the midterm elections on Nov. 3, and seized her phone, computers, passport and other documents