Yeah, the joke is that you could indict a ham sandwich. But in seriousness, the bar is supposed to be low. The prosecutor needs to present enough evidence to co

Yeah, the joke is that you could indict a ham sandwich. But in seriousness, the bar is supposed to be low. The prosecutor needs to present enough evidence to convince the grand jury that there is probable cause to believe that the accused has committed a crime. You have to have some evidence of guilt. And like dijit says, prosecutors aren't in the business of prosecuting hopelessly unwinnable cases, which is what you would have if you can't even show probable cause.