Iowa representative Steve King addressed his controversial "heartbeat bill" at a press conference on Tuesday, which will be introduced to Congress this year and calls for a nationwide ban on abortions after a fetal heartbeat is detected—roughly just six weeks into a woman's pregnancy, BuzzFeed reports.If passed, the bill would make nearly all abortions illegal as most women do not know they're pregnant until after their second missed period. It also has no exceptions for women who are victims of rape or incest, or who might have fetal abnormalities. The bill is one of the strictest abortion bills since the Roe v. Wade case and violates the constitutional clause that 1973 decision put in place.But apparently King is banking on Trump appointing a pro-life Supreme Court justice who could reverse the historic ruling and give the bill a chance."By the time we march this thing down to the Supreme Court, the faces on the bench will be different," King said Tuesday outside the Capitol building in DC. "I'm not sure how different, but I'm hopeful."While the bill will likely not get the votes it needs to move past the House, it signals a wave of anti-abortion "heartbeat bills" making their way around various state legislatures. A similar bill, co-authored by the same anti-abortion activist that wrote King's, passed Ohio's legislature back in December before governor John Kasich vetoed it, concerned about its constitutionality.Follow Catherine Pears on Twitter.