The Stamp Act Controversy
Something was dreadfully wrong in the American colonies.
All of sudden after over a century and a half of permitting relative self-rule, Britain was exercising direct influence over colonial life. In addition to restricting westward movement, the parent country was actually enforcing its trade laws.
Puttin' on the Writs
Writs of assistance, or general search warrants, were granted to British customs inspectors to search colonial ships. The inspectors had long been charged with this directly but, until this time, had not carried it out. Violators did not receive the benefit of a trial by jury; rather, they were at the mercy of the British admiralty courts.
http://www.ushistory.org/us/9b.asp