(CNN) - The National Right to Life Committee is calling on the University of Notre Dame to rescind its invitation to President Obama to speak at the university's May commencement.
In a letter sent to Notre Dame's president, Rev. John I. Jenkins, the pro-life group called President Obama the "Abortion president," and that the school's invite "is a betrayal of the University's mission and an affront to all who believe in the sanctity and dignity of human life."
Anthony J. Lauinger, National Right to Life Committee vice president, cites the president's support for abortion rights and expansion of stem cell research as disharmonious with the traditional Catholic university's core values.
"As a Notre Dame parent and supporter, I am outraged by this invitation to Barack Obama. I have apologized to my eight children for the poor guidance I provided them when I encouraged them to enroll at Notre Dame," Lauinger said in the letter.
The National Right to Life Committee isn't the only group raising objections over the university's invitation.
The conservative Cardinal Newman Society has launched notredamescandal.com, a website opposing Notre Dame's decision to honor President Obama in South Bend, Indiana. As of Tuesday, over 50,000 conservative Catholics have signed the online petition protesting the invite.
UPDATE after the jump
University of Notre Dame spokesman Dennis Brown said Tuesday he does not foresee the university rescinding President Obama's invitation.
The president is set to give the spring commencement addresses at Arizona State University and the US Naval Academy in addition to Notre Dame, the White House announced Friday.
UPDATE: The bishop for the Ft. Wayne/South Bend diocese said Tuesday he is boycotting the university's graduation ceremony. Bishop John D'Arcy said his decision "is not an attack on anyone, but is in defense of the truth about human life."
"This will be the 25th Notre Dame graduation during my time as bishop. After much prayer, I have decided not to attend the graduation. I wish no disrespect to our president, I pray for him and wish him well," D'Arcy said in a statement. "I have always revered the Office of the Presidency. But a bishop must teach the Catholic faith 'in season and out of season,' and he teaches not only by his words – but by his actions."