BLITZER: Breaking news, after battling weeks of scandal and facing growing pressure from protesters, Puerto Rican Governor Ricardo Rossello is finally resigning. Let's go to CNN's Leyla Santiago -- she's in the capital of San Juan -- for an update. Leyla, what is the very latest?</s>LEYLA SANTIAGO, CNN CORRESPONDENT: Wolf, this crowd is cheering -- or was cheering just a second ago because a protester just announced that Pierluisi who Rossello, the now-former Governor of Puerto Rico, said will be sworn in as Governor has just arrived at La Fortaleza. And this crowd will not back down. That is why they are listening, paying attention to see what is happening at the Governor's mansion and promising not to back down because they don't want him as their leader either. I had an interesting conversation with one protester, and he said, we don't want Pierluisi. We don't want Vasquez. We just want decency, so we will continue to protest despite Rossello stepping down. Now, there are a lot of questions about the legality of whether or not Rossello having sworn in Pierluisi can actually be valid. Whether or not he is legally allowed to be the Governor of Puerto Rico, given that the Senate has not confirmed him yet and said that they will not consider even taking up the issue until next week.</s>BLITZER: Leyla Santiago in San Juan for us. All right, Leyla, you have -- you'll stay in touch with us. We'll, of course, keep our viewers updated. Very important story, indeed. Just ahead, the United States is slapping new sanctions on Russia in retaliation for a deadly nerve agent attack in the United Kingdom. Did Congress force President Trump to punish Putin?
Puerto Rican Governor Resigns Amid Scandal, Protests