WASHINGTON (Reuters) - Lawmakers reached into the past to find a way to enforce future budget cuts called for in the deal to raise the nation's $14.3 trillion debt limit, but history shows these enforcement mechanisms do not always work. (http://feeds.feedburner.com/~ff/reuters/topNews?d=yIl2AUoC8zA) (http://feeds.feedburner.com/~ff/reuters/topNews?i=Cl8KbfR1uQ4:RT7VKhr1iJQ:V_sGLiPBpWU) (http://feeds.feedburner.com/~ff/reuters/topNews?i=Cl8KbfR1uQ4:RT7VKhr1iJQ:-BTjWOF_DHI) (http://feeds.feedburner.com/~r/reuters/topNews/~4/Cl8KbfR1uQ4)