A strong ethical argument against the use of euthanasia is that it could soon become a slippery slope, with the legalisation of involuntary euthanasia following it. Lord Walton, the chairman of a House of Lords committee on medical ethics looking into euthanasia spoke on the subject: “We concluded that it was virtually impossible to ensure that all acts of euthanasia were truly voluntary and that any liberalisation of the law in the United Kingdom could not be abused." Since involuntary euthanasia is indistinct from murder it would be impossible to regulate, causing the danger of murderers not being brought to justice, due to their crimes being passed off as involuntary euthanasia. There is also concern that doctors could end up killing very sick patients without asking for their permission, and in the worst case scenario, begin to kill off patients to free up beds in hospitals, or to save money. These situations show how dangerous it could be to let the legalisation of euthanasia lead into the legalisation of involuntary euthanasia.