probe. they are almost certain to get hit with the subpoenas in a matter of days but also current state department officials, people asked to come in and testify expected to be served with subpoenas because of this white house and state department effort to resist the impeachment investigation and at all costs. that could include marie yovanovitch, the former u.s. ambassador to ukraine. she has already been scheduled for an interview on friday. but we are told from multiple sources familiar with the matter that there is new concern that she may not appear on friday amid this white house and state department push to prevent the officials from testifying. because she is still a state department employee and there is concern she could face backlash internally so there is growing discussion among democrats to simply hit the people with subpoenas without formally inviting them from interviews first. and also news also on the whistle-blower whose complaint has royaled the trump's presidency, there is effort to