Paul Manafort will have his day in court this week. The 69-year-old former Trump campaign chairman goes on trial Tuesday in Alexandria, Virginia, one of two criminal cases brought against him by special counsel Robert Mueller. On the surface, the criminal charges against Manafort — tax evasion, failure to report foreign bank accounts and fraudulently obtaining bank loans — are unrelated to the core of Mueller’s investigation into whether the Trump campaign colluded with Russia. The charges stem from Manafort’s decade-long lobbying and political consulting work for Ukraine’s former president, Viktor Yanukovych. While working for Yanukovych and his pro-Russia Party of Regions between 2006 and 2015, Manafort and his former business partner Rick Gates allegedly earned tens of millions of dollars in fees while hiding the income from the IRS. To avoid paying hefty taxes, prosecutors say, they set up secret shell companies and offshore accounts to funnel their Ukrainian …