"[O]verturning Roe would expose the fundamental weakness of the extreme anti-abortion position. In the 30 years since the decision, public opinion about abortion has remained remarkably stable. As Everett Ladd and Karlyn Bowman of the American Enterprise Institute have noted, national polls from 1975 to the present suggest that public opinion on abortion for the past three decades has consistently included extremes on both sides that favor either no restrictions or total bans--each of which command about 30 and 20 percent support, respectively--and a vast majority in the middle that opposes both early-term bans and late-term abortions. Americans have reached a moderate consensus: In a CNN/Gallup/USA Today poll last month, 66 percent said abortion should be legal during the first three months of pregnancy; by the second trimester, when the fetus becomes viable, only 25 percent said abortion should be legal; and, by the third trimester, when so-called partial-birth abortions would be performed, only 10 percent say abortion should be legal. These numbers, too, have remained entirely consistent during the three decades since Roe was decided."