Retired astronaut, Tucson resident and husband of former Congresswoman Gabrielle Giffords is calling for gun reform following Friday's deadly school shooting in Connecticut.

In a Facebook posting today, he reiterates a point he made at the sentencing of Jared Lee Loughner, the man who shot Kelly's wife through the head on Jan. 8, 2011.

 Here is his posting:

I just woke up in my hotel room in Beijing, China to learn that another mass shooting has taken place - this time at the Sandy Hook Elementary School in CT. My thoughts and prayers are with the families of the victims and the entire community of Newtown, CT. I just spoke to Gabby, and she sends her prayers from Tucson.

As we mourn, we must sound a call for our leaders to stand up and do what is right.

This time our response must consist of more than regret, sorrow, and condolence. The children of Sandy Hook Elementary School and all victims of gun violence deserve leaders who have the courage to participate in a meaningful discussion about our gun laws - and how they can be reformed and better enforced to prevent gun violence and death in America. This can no longer wait.