Dr. James Milgram leads an attack on another front in support of low standards.
http://parentsacrossamerica.org/james-milgram-on-the-new-core-curriculum-standards-in-math/
A cursory study of Dr. Milgram et al points to a common thread. Both Milgram and Stotsky point to the fear that students rising up through the system will be ill-served by requiring new, stronger standards, particularly in the middle grades as Stotsky (2013) argues.
References:
Milgram, J. (2010) http://parentsacrossamerica.org/james-milgram-on-the-new-core-curriculum-standards-in-math/
Stotsky, S., (2013) http://pioneerinstitute.org/blog/more-than-one-fatal-flaw-in-common-cores-ela-standards-by-sandra-stotsky/