Jan. 22 is the 40th anniversary of the Supreme Court's Roe v. Wade abortion decision, a topic of never-ending controversy. Many abortion opponents have focused on state legislatures, including Texas, pushing for measures to regulate the procedure. Many abortion defenders say those efforts threaten to regulate it out of existence, negating Roe. The legal distinction is whether the regulations -- required sonograms, waiting periods, tighter limits on when and where an abortion can be performed and higher standards for doctors who perform them -- place an "undue burden" on pregnant women who, according to Roe, have a right to opt for abortion. Where do you stand?Send no more than 150 words, plus your name, home address and daytime phone to email@example.com. Deadline is Wednesday.