Texas must reveal the source of the drugs it uses for executions.<br />Its Supreme Court doesn't believe doing so will harm the supplier and impede lethal injections.<br />Major pharmaceutical firms banned the sales of lethal injection drugs a few years ago.<br />Since then, Reuters reports most states have kept the suppliers of their drugs secret.<br />That has prompted lawsuits on behalf of death row inmates.<br />Lawyers have argued that prisoners could be subjected to unconstitutional suffering. <br />
