Now Playing: Bishop releases list of 71 Catholic priests and church personnel accused of sex abuse

Now Playing: Bishop releases list of 71 clergy accused of abuse

Now Playing: 1-on-1 with White House National Security Adviser John Bolton

Now Playing: Bishop responds to grand jury report on alleged child sex abuse

Now Playing: Trump an ‘asset’ but still ‘hard’ for GOP to keep House: Former Trump adviser

Now Playing: GOP strategist: Trump has ‘surrounded himself by people that are unfit’

Now Playing: Michael Avenatti says his policy issue is ‘the truth… the facts and evidence.’

Now Playing: Republicans ‘certainly can’ pick up seats in the House, says Kellyanne Conway

Now Playing: House Dem: Trump has tried to ‘distract us’ from being world’s ‘moral authority’

Now Playing: Chris Christie: Democrats need ‘a little bit more exciting’ message to voters

Now Playing: Powerhouse Roundtable: Trump’s ‘shifting stories’ on Russia ‘are a problem’

Now Playing: ‘Chaos’ around Trump ‘has unnerved a lot of people’: GOP Gov. Kasich

Now Playing: Washington Gov. Jay Inslee: ‘We feel very positive’ going into midterms

Now Playing: ‘Obstruction of justice by tweet is absurd’: Trump lawyer Jay Sekulow

Now Playing: Reuniting Korean War remains with their families is ‘sobering but rewarding work’

Now Playing: Rick Klein: ‘The battle for the House is taking place in the suburbs and the exurbs’

Now Playing: ‘Michael Cohen is on his own here,’ but ‘potentially has information’: Dan Abrams

Now Playing: US ‘unprepared for’ Russian ‘influence campaign’ in elections: Cybersecurity expert

Now Playing: 100 days ahead of midterms, GOP and Democratic campaign chairs talk who will win

Now Playing: Russia’s ‘key goal’ is ‘sowing chaos’ in US democracy: GOP senator