Another way of pressuring ukraine to investigate former vice president biden. jennifer williams, a senior adviser in the office of the vice president, testified that a colleague -- she said it was the chief of staff's assistant -- told her, the chief of staff's assistant, that president trump had directed vice president pence not to attend the inauguration. however, williams had no firsthand knowledge of any such direction or the reasons given for any such direction. if, indeed, such a direction was given, it's not clear from the evidence why it was done, because the vice president's office wa...