Nixon was on the verge of being impeached for obstruction of justice.
That's the first charge (multiple occurrences) on the list of trump's crimes.
He, his family and his campaign officers (even though they've now demoted 
Manafort and Flynn to being mere volunteers and only on the campaign for a
short time) are going to have their own rap sheets before this is all done.
trump will issue pardons but accepting one, as arpaio did, is an admission of guilt
and opens the door for evermore revealing testimony.
.
When trump is called to testify before Mueller's Grand Jury will he continue to lie
about having 'no deals' with or in Russia during the campaign?
Will he have his own "depends on what 'is' is" moment?