delayed. saying trump can t be prosecuted for potential time in office. more. reporter: the area district attorney investigating donald trump says as soon as she has a special grand jury seated in may, she ll start firing off subpoenas. most of them will probably start to come in a heavier flow for lack of a better word in june. certainly some in may. reporter: bonnie willis said she isn t worried about slowing the probe in the effort to overturn the election results in 2020. are you worried former president trump could avoid, delay what s going on with your investigation? no. why is that? what gives you that confidence? this is a criminal investigation. we re not here playing a game. i plan to use the power of the law. we are all citizens. mr. trump, just as every other american citizen is entitled to dignity, entitled to be treated fairly, treated fairly in this jurisdiction but i plan to do my job and my job is to make sure that we get the evidence that gives us the