The document entitled "The First Report on the Activities known as The Minutemen Project" (roughly translated) is dated April 11, 2005. So far, it is discussing the Minutemen's formation through the Mexican government's communication with our Government about its displeasure with this group. That their displeasure has been brought up to various US officials several times, and again when the Fox was in Waco with the President. It also mentions legal actions it was looking into taking.
Some of these occurrences I have read in other news articles before, but my brief summary above does not nearly summarize everything I've read so far.