23ABC News at 11 p.m. Top Stories for February 17, 2020

A new law -- aimed at helping keep people safe from health hazards in the air... Set to be implemented first in Shafter. All for protection from harmful air pollution caused by a variety of factors -- including the local ag industry... And -- President Trump preparing to visit Kern County -- a look at what we know so far about the president's planned trip and what he will discuss with local lawmakers...