Keeps focus on controversies in hope of swaying voters for 2020. Avoids the potential backlash of impeachment.
a) Could embolden Trump in 2020 if voters perceive it to be ill-judged
b) It won’t gain Republican support needed to pass anyway (in Senate)
c) Issue splits Democrats + could inflame tensions
But others in latter group are much more circumspect, saying Trump behaviour could be impeachable but questioning value of taking that move. (Buttigieg, Sanders).
Grillings to be clipped up for TV. Subpoenaed docs with new info. On everything from Mueller to security clearances to policy.
(For now at least)