Julian Assange of Wikileaks arrested in London. He will be sent to US. Will 1st amendment apply to him here?

I don't know. Certainly the 5th as that is available in most countries. 

True and the sides are mingled. 

We do not arrest news people in the US for publishing...even if it is classified information.
He is not a citizen so will different laws apply? This post was edited by my2cents at April 11, 2019 2:39 PM MDT

He is accused of hacking into our government's computers for the purpose of obtaining and disseminating classified information detrimental to this country.  The First Amendment does not include hacking for this purpose.  

I had not heard the charge. I know they have always said he did not do any hacking himself just publishing on Wikileaks. Maybe they learned some new info. 

But you are right 1st would not apply to that.

I believe they added more charges including conspiring with that transgender soldier to obtain classified information.  I didn't catch all of the charges when it came on the news - I was doing something.

I checked this out after my original response:

https://www.npr.org/2019/04/11/712128612/julian-assange-arrested-in-london This post was edited by SpunkySenior at April 11, 2019 8:13 PM MDT

So, the only charge (at this time) against Assange "stems from what prosecutors said was his agreement to break a password to a classified United States government computer." 

"Reporters have expressed concern that charges for publishing stolen documents could erode the First Amendment, but Assange's charge is for hacking, not publishing, the documents he obtained with Chelsea Manning."  Therefore, this is not a First Amendment issue.

The quotes are from an Axios PM email I received this evening, but I can't seem to link it for you to check it out.  

At least they will have something real to talk about for change.