While a single visit to an emergency room can cost hundreds or thousands of dollars (often paid for by the government), a call to a poison center costs the government only $30 or $40. A study in the Journal of Medical Toxicology estimated that the poison centers saved the State of Arizona alone $33 million a year. Louisiana eliminated its centers in the 1980s but restored them when it realized how much money they saved.
Classic GOP: borrow a billion to save a few million and demolish a demonstrably effective government program. The problem is, no government program large or small can be seen to work. Thus it must go, costs be damned.
If the GOP wants it, you can rest assured it is going to create a bad policy outcome. Bad policy outcomes are catnip to the GOP.