The 45th annual March for Life rally takes place Friday in Washington. President Trump says he will speak at the anti-abortion event from the White House. The rally also coincides with the 45th anniversary of Roe vs. Wade, a Supreme Court ruling that legalized abortion in the United States. Pro-choice supporters favor the law, while anti-abortionists want the decision reversed. VOA's Deborah Block looks at the debate over the issue.