Prosecutors move to drop charges against scientist accused of smuggling frog embryos

The Trump administration has moved to drop charges against Kseniia Petrova, a Harvard University researcher accused of illegally smuggling frog embryos into the U.S. Petrova, a Russian-born scientist, was detained and threatened with deportation after failing to declare the items at customs, an infraction her lawyers argued would normally be minor. The case has drawn attention to immigration enforcement.