Recent letter from Mescalero Tribe Council explains that climbing Sierra Blanca is no longer allowed due to mountain being a sacred site, etc. Last year my request to hike was refused because of the drought conditions, now apparently no climbing permitted whatsoever. slowbutsteady
However, when I made the summit on May 15, 2014, the summit mailbox had a nice notebook full of names and dates well after your 2007 post. Officially, Sierra Blanca may not be permitted, but I wouldn't let that stop anyone, as the evidence is that visitation is relatively frequent.