WASHINGTON (AP) — With deaths mounting at the nation's nursing homes, the White House strongly recommended to governors Monday that all residents and staff at such facilities be tested for the coronavirus in the next two weeks.

Why the government is not ordering testing at the nation's more than 15,000 nursing homes was unclear. Nor was it clear why it is being recommended now, more than two months after the nation's first major outbreak at a nursing home outside of Seattle that eventually killed 45 people.

Vice President Mike Pence, who leads the White House coronavirus task force, told gover...