[olliej]

No, require companies that offer IP based calls to take the same steps any other phone company is required to undertake.

There is no requirement for a company to let anyone make a call without have some identity confirmation.

Other than that, I agree few (no?) other countries have quite the same level of murder-by-cop (with or without swatting calls) as the US does. This seems to be at least in part due to the US police forces having ensuring that police are never liable for anything, and having got legislation to ensure that any "fear" of harm to themselves warrants immediate lethal force.

[aeternus]

What identity confirmation exists currently for phone companies? You can use a pay phone, pay cash for a prepaid wireless phone, phone in a motel room booked under a fake name, etc.