John McCain actually said...

In March 2016, you said that emerging contested environments pose a significant challenge to transportation and distribution networks.

McCain references a previous statement on challenges posed by contested environments.

03/08/2017

More John McCain Quotes

We do not want the military on the border. That is not appropriate. It is not constitutional.

We have no control over our southern border. 30,000 illegal immigrants are coming across the Arizona border every month.

I do not see how you can possibly tell Americans that their homeland is secure if their border is not secure.

It poses a threat. I do not know how we can assure the security of our homeland when we have insecure borders.