A teenager living near the U. S.-Mexico border has a sense that immigration is a bad thing. After watching several local news reports, he believes this even more strongly. This suggest that the news report

This suggests:

1) The news report plays a role of anti immigration within the city, county, area, etc.

2) This news report has been the main source of information for this teenager.

3) And this news report reflects an opinion of its viewers.

Explanation:

Because even though some controversy over the issue, there is a lot of misinformation from both sides. And in addition to this, there is prejudice, political interest from both sides, (pro immigrants / anti immigrants) Democrats and Republicans.

News reports like that and some recent polling against some policies on this matter shows some controversy over this matter.