The century-old bridge carries about one-quarter of all goods traded between the U.S. and Canada. It can back up in bad weather.

U.S. automakers depend on parts from Canadian manufacturers. And a lot of them cross the Ambassador Bridge.

A similar mandate, however, will be allowed for health care workers.

Nearly two years into the pandemic, with vaccination mandates and other precautions in place, businesses are operating without new ways to mitigate risk.

A majority of small business owners in one survey said vaccination is essential to economic recovery.

During the pandemic, many tribal governments’ strict public health orders have clashed with the more relaxed approach of nearby communities.

Some businesses are preparing to meet the rule that companies with 100 or more employees require vaccinations or weekly tests, despite the court challenge.

States are taking different paths on paying benefits to people who lose their jobs for refusing to be vaccinated against COVID-19.

So far these mandate were local. But police officers in many states face coming federal vaccine requirements for public workers.

There are layers of factors to consider when companies weigh the actual cost of dealing with unvaccinated workers.