Should doctors warn patients of a policy threat that may not come to pass? That's the question pending, as the Trump administration weighs whether to deny green cards to immigrants on Medicaid.

Low-income residents living near highways and agricultural and industrial zones are getting hit with a "double whammy" as wildfire smoke drifts to areas where the air is often polluted already.

As fires continue to rage in California, smoke is causing health problems for some residents. Public health officials warn against breathing polluted air.