Federal immigration officials announced Tuesday that they recently conducted 900 site visits and in-person interviews across the Twin Cities, investigating alleged immigration fraud in international marriages, in the workplace and with international students, among other areas. Edlow and other federal officials at the press conference would not say how many people they plan on charging. Credit: Aaron Nesheim | Sahan JournalUniversity of Minnesota students targetedSeveral international students reported surprise visits by two USCIS officers last week, according to local immigration attorneys. Officers approached the international students at their workplaces and apartments and asked them about their visas, attorneys said. Medeiros said at least five international students notified him last week that they had been questioned.