I think there's a distinction to be made. One between adding coverage catering to Windsor viewers, on US stations; and adding coverage of Windsor/Ontario/Canada of value to Detoiters/Michiganders/Americans.

There isn't a lot to be gained for a typical US station in adding temps. in Celsius or reporting on highly niche, local Windsor stories. They won't attract many additional Ontario eyeballs or ad dollars.

However, there is a useful service in both meeting the needs of existing newscast viewers; and helping to develop a regional economy.

At the most basic level, how many young people in Detroit even know that Windsor has a University, or that they could likely attend it w/relatively little fuss, quite possibly at a cost below what they would pay at home, given current exchange rates?

This isn't a matter of advertising one institution at the expense of another, but of educating your viewership about their options, producing a possible benefit for them.

The same goes for any number of other targeted news items.

Toronto and Montreal are sharing the World Junior Hockey championships this year.

Could Windsor and Detroit do the same?

If passport uptake in the Detroit area hinders the local economy, what could be done to increase it?

There are lots of stories that could include Windsor or Canada to the benefit of those in Detroit or Southern Michigan.

It shouldn't be seen as catering to Canadians, but rather offering useful info to American viewers.