The White House says retaining troops who may require substantial medical treatment "presents considerable risk to military effectiveness and lethality."
Britain is investigating whether Facebook, the world's largest social media network, did enough to protect data.
No evidence of violence was found in the deaths at a condominium near the Caribbean coast town of Tulum, Mexican officials said.
The ride at a Kansas water park had already injured more than a dozen people before a 10-year-old boy was decapitated in 2016, the indictment says.
Demonstrators enraged over the shooting of the unarmed father-of-two locked arms and blocked entry to the Kings' arena.