Citigroup Inc. is expected to close its Banamex USA unit after government authorities began probes of possible violations of anti-money laundering laws, the Wall Street Journal said on its website on Sunday. The bank has suggested the shutting the unit with regulators as a part of talks to settle the probes into Banamex USA’s anti-money laundering controls, the paper said, citing people familiar with the matter. Regulators are not seeking such a move from Citigroup, but they want the unit to pay more than $100 million to settle the allegations, according to those people.