Screwworms are on their way to becoming a billion-dollar international problem but can be contained if ranchers are vigilant, watch their herds and other wildlife, and quickly treat any infestations, U.S. Agriculture Secretary Brooke Rollins said.

In our news wrap Monday, authorities reported three more cases of New World screwworm in the U.S., a federal judge struck down Trump's $100,000 H-1B visa fee, a stabbing at New York City's Penn Station left six people injured, a 7.8 magnitude earthquake killed at least 35 people in the Philippines, and "Schmigadoon" was crowned best musical at the Tony Awards.

Two more cases of the New World screwworm have been confirmed hundreds of miles apart in Texas, demonstrating the difficulty of stopping the spread of a pest that could potentially devastate the nation's cattle industry.

The New World screwworm fly is threatening the $113 billion U.S. cattle industry for the first time in more than a half century, with an infestation from its flesh-eating larvae confirmed in south Texas.