Michigan Democratic Rep. Bart Stupak, who was the central figure in the abortion debate surrounding the health care law, will retire from Congress at the end of this term.

Stupak, who's been in Congress for 18 years, will make the announcement at a 12:30 p.m. ET press conference in Marquette, Mich.

Stupak told The Associated Press that attacks on him for his role in the abortion debate did not influence his decision and he could win re-election if he tried...