Al Capone spending. The key to Capone's conviction on tax charges was proving his income, and the most valuable evidence in that regard originated in his offer to pay tax. Ralph, his brother and a gangster in his own right, was tried for tax evasion in 1930. Ralph spent the next three years in prison after being convicted in a two-week trial over which Wilkerson presided. Capone ordered his lawyer to regularize his tax position. Crucially, during the ultimately abortive negotiations that followed, his lawyer stated the income that Capone was willing to pay tax on for various years, admitting income of
Al Capone marked Capone's rule. Organized crime in the city had a lower profile once Prohibition was repealed, already wary of attention after seeing Capone's notoriety bring him down, to the extent that there is a lack of consensus among writers about who was actually in control and who was a figurehead "front boss". Prostitution, labor union racketeering, and gambling became moneymakers for organized crime in the city without incurring serious investigation. In the late 1950s, FBI agents discovered an organization led by Capone's former lieutenants reigning supreme over the Chicago underworld. After Capone was released from prison, he was referred to