One of the achievements of the 80th Texas Legislature was its passage of a castle doctrine. The measure, sponsored by Sen. Jeff Wentworth, R-San Antonio, clarifies the instances in which individuals can use deadly force in self-defense. In some circumstances under current law, citizens are required to retreat rather than use force in self-defense. Wentworth's bill, which takes effect Sept. 1, broadens the presumption of reasonableness for self-defense and removes the threat of civil litigation for damages. The Senate passed the new law by a vote of 30-0. The House followed with a 133-13 approval. One of the 13 opponents...