The interviews with FBI agents are part of the Justice Department's effort to fulfill a promise an assistant attorney general made to Congress last month to examine whether a special counsel was warranted to look into what has become known as the Uranium One deal, a senior Justice Department official said."

When Trump dropped his "Lock her up" theme towards Hillary after the election, I stated he was being magnanimous in victory.  After discovering she helped fund the fake dossier, I suspect he's decided to seek justice.