In recent years however many bills have followed variants of the 'normal' procedure. Barbara Sinclair, in her excellent book "Unorthodox Lawmaking" now in its third edition : http://www.cqpress.com/product/Unorthodox-Lawmaking-New-Legis.html
outlines how practice has latered in recent years. She explains why new practices have become the norm - with more emphasis on negotiations and compromises before and during passage - with less discussion and amendment on the floor - and how the party leadership has been more closely involved in the legislative procedure. The many different procedures are outlined and explained.