Transcript for Joe Biden Weighs Run in Wake of Recent Family Tragedy
L saieveral gopdians cteda suis dav Paul -- I think it's absur someone in jail exercising their religious liberty. Reporter: To senator Ted Cruz to former governor Mike Huckabee using the #imwithkim tweeting we must defend religious liberty asking supporters to sign a petition to free the clerk but the white house also weighing in. The success of our democracy depends on the rule of law and there's no public official that law. Reporter: Now Davis can resign. If she doesn't and refuses to comply the judge can hold her in custody until she follows the law. George. Thanks, Alex. More on this now from the lawyer for Kim Davis, Matthew St I understand and respect her beliefs here and her conscience but whenlic official's Biden gave this heart felt response. The most relevant factor in my decision is whether my family and I have the emotional energy to run. Reporter: Biden dismissed other factors including fund-raising and whether or not he could take on Hillary Clinton. It's not the factor. The factor is can I do it? Can my family undertake what is an arduous commitment that we'd be proud to undertake under ordinary circumstances but the honest to god answer is I just don't know. Reporter: The Biden family is still coping with the death of beau Biden to brain cancer in may. In his final days beau reportedly urged his father to run. I can't look you straight in the eye and say now. I know I can do that. This is as honest as I can be. Reporter: Biden is expected to take at least a few weeks to make this decision but, George, after those comments last night, it is now more clear than ever why at this point he truly is undecided. Yeah, you can see it. His demeanor so striking there. He said Hillary Clinton not a factor but is she still facing the e-mail questions. One of her top aides testifying on capitol hill yesterday. Reporter: No question that it is a factor as far as those close to him. They look at this race, they see that Hillary Clinton with all the problems dealing with her e-mail issue is clearly vulnerable. They believe she is clearly beatable in a democratic primary and that is the case that they are making to democrats as Joe Biden maybes this decision.
This transcript has been automatically generated and may not be 100% accurate.