What do you mean? He told us during the campaign he would prosecute her. Millions voted for him because of this ONE campaign promise (lie?).
reality does not work that way. The POTUS is not a king or fascist dictator who can just prosecute someone. It would take a collective political will from the other two branches of government. As it is Trump stands alone with both sides working against him. He can't even get the A$$hoe republicans to replace Obamacare,all he can do is stand there with a pen ready to sign it, much less of a chance to get some weasles in the submissive republican party to take a look at Hillery's extensive crime wave. The republican senators are just country club members on permanent vacation constantly entertaining their special interests, there is no power and money in going after Hillary,and if they did some of the fallout would probably roll back on many of them, so it will never happen.
the swamp creatures all need to watch each others backs