Paul Manafort, the campaign chairman for U.S. presidential candidate Donald Trump, should be questioned by Ukrainian investigators over almost $13 million he allegedly received from a secret account for working on behalf of toppled former President Viktor Yanukovych, a lawmaker said.“We state that Mr. Manafort received $12,774,869 from Nov. 20, 2007, until Oct. 5, 2012, from a shadow account of the Party of Regions, which was filled in a non-transparent, corrupt way,” legislator Serhiy Leshchenko told a news conference in Kiev on Friday.