In July 2016, the Obama administration announced its decision not to prosecute Hillary Clinton for felony mishandling of classified information and destruction of government files. In the aftermath, I observed that there is a very aggressive way that the Justice Department and the FBI go about their business when they are trying to make a case — one profoundly different from the way they went about the Clinton emails investigation. There, they tried not to make the case. That observation bears repeating today, as we watch Special Counsel Robert Mueller’s investigation of any possible Trump-campaign collusion in Russia’s alleged interference in the 2016 presidential campaign. Mueller is a former FBI director and top Justice Department prosecutor. To say he is going about the collusion caper aggressively would be an understatement. The earth is being scorched by the stunningly large team he has assembled, which includes 16 other prosecutors (among them, Democratic party donors and activists) along with dozens of investigators (mostly from the FBI and IRS).