I think they want to bring him in in order to grill him on these allegations and to say, hey, look, you know, we are on the case in this and to signal to their audience of one.

我认为他们想把他叫来，就是为了针对控对他加盘问，“，看，我们正在处理件事”，以此向他们的目标受众发出信号。