secure line a U.S. official says he heard President Trump push for Ukraine

investigations again. I know nothing about that first time I've heard it.

As the man on the other end of that line prepares to testify publicly,

what will he say about the president's orders?

I'll speak to a Republican on the House Intelligence Committee Congressman Mike Turner next.

And Unforced error? The president goes after a witness on Twitter

while she was testifying about feeling under attack.

It's very intimidating.

Democrats sees on the tweet as potentially illegal.

We take this kind of witness intimidation

and obstruction inquiry very seriously.

Democratic Senator Chris Murphy joins me to discuss next.

Plus, taking the lead.

There's a new frontrunner in Iowa.

It's very encouraging at the same time, there is a long way to go.

The South Bend Indiana mayor surpasses his biggest Democratic rivals in the first

caucus state, but can he do the same across the country? Hello, I'm Dick Tapper in Washington, where the state of our union is just trying to keep up.

After a difficult week week President Trump is

waking up this morning to some not so great news politically Democrat John Bell

Edwards has narrowly won re-election in Louisiana as governor despite President Trump putting his

full support behind the Republican challenger and traveling to the state to

campaign twice in the past two weeks trying to make the Louisiana race a

...