Nearly 500 jurisdictions are now sanctuary cities, according to a group that’s tracked the issue for more than a decade, and who said there’s been a massive surge in the number of places trying to thwart federal immigration agents since President Trump’s election. The Ohio Jobs & Justice Political Action Committee (http://www.ojjpac.org/sanctuary.asp) has added more than three dozen new cities and counties to its list in 2017 alone, as jurisdictions rush to try to shield illegal immigrants from what they expect to be a new push for deportations under Mr. Trump. “More will be coming,” said Steve Salvi, founder of...