The newest list of speakers includes Senate Majority Leader Bill First, a doctor from Tennessee who recently spoke in favor of President Bush's position against taxpayer funding of embryonic stem cell research.
Senator Rick Santorum of Pennsylvania, the sponsor of the partial-birth abortion ban Bush signed into law, will also speak as will Senator Sam Brownback, who has been the leading pro-life lawmaker fighting human cloning.
Other pro-life speakers on the new list include Speaker of the House Dennis Hastert, Senator Elizabeth Dole, Kentucky Congresswoman Anne Northup, and Maryland Lt. Governor Michael Steele, a leading black Republican.
Senators Santorum and Brownback, Lt Gov Steele and Congresswoman Northrup also happen to be Catholic.