Complex sentence: Among those dissenting Thomas, Hennessey, and Holtz-Eakin collaborated on a single report while Wallison, from the American Enterprise Institute drafted his alone and proposed that the crisis was caused by government affordable housing policies rather than market forces.
Split into simpler sentences: Among those dissenting Thomas, Hennessey, and Holtz-Eakin collaborated on a single report while Wallison drafted his alone. The dissenting draft by Wallison of the American Enterprise Institute claimed that the crisis was caused by government affordable housing policies rather than market forces.