Opponents of Alabama's nitrogen executions want nitrogen companies to withhold supply

Alabama in late January became the first state to use nitrogen gas in an execution, finding a new way to carry out a death sentence after drug companies refused to let their products be used in lethal injections.Kenneth Eugene Smith, 58, was put to death Jan. 25 for the 1988 murder-for-hire killing of 45-year-old Elizabeth Sennett. State prison officials put a mask over his face, replacing the