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This is cnn's senior national correspondent alex marquardt in washington, where the acting secretary of homeland security just laid out this announcement. alex, what did he say? >> reporter: that's right, kate. acting secretary of homeland security kevin mcaleenan is essentially saying that this new rule that they're putting into place will replace what is known as the flores settlement agreement. that, as you said, allowed migrant children to be held for no longer than 20 days. as a result, mcaleenan said, that created an incentive for migrant families to come to the u.s. illegally because th...

That this is just simply not how a u.s. ally should be treated. keep in mind that on sunday when president trump was talking to reporters, he confirmed his interest in greenland, purchasing it for the first time. sources told cnn that the white house counsel's office had been directed to look into the possibility of purchasing greenland. also, president trump told reporters that his trip to copenhagen had nothing to do with his interest in buying greenland. in fact, he had said that was an issue that was pretty much on his back burner. so kate, we've seen a pretty dramatic shift from president...

Problem as the democratic party moves even further left. >> it kind of stands out as something of an anomaly. many people are puzzled by the fact that the most liberal member of the senate, this one democratic socialist, takes the position that seems at odds with liberalism in america. >> senator bernie sanders. >> reporter: during last month's cnn debate, sanders try toddy fu -- tried to diffuse the issue saying the nra gave him a d-minus rating. that may not be low enough. >> kate, sanders' campaign sent a statement saying as president, sanders would take immediate action to reduce gun viole...

Against the brady bill five different times, the legislation that finally passed and allowed for instant background checks sanders voted against. and in 2005, sanders sided with the nra, voting for a bill protecting gun manufacturers from being sued by victims of gun violence, like fred guttenberg. he's now calling for its repeal. in his 2016 presidential race, sanders passed votes on gun legislation became an issue. >> secretary clinton, is bernie sanders tough enough on guns? >> no, not at all. >> when they're a threat to others or themselves -- >> reporter: which at the time, sanders denied...

Commit mass attacks. cnn is following this from florida. what are you hearing? >> reporter: you know, we've been following and tracking all of these cases across the country. some of them have been here in florida. we've been following these cases. a lot of them are very similar. they start with an anonymous ten and police officers follow leads and then lo and behold this is an arrest. there are two cases here in this county, in volusia county. in one case a 25-year-old was arrested at a winn dixie parking lot after his ex-girlfriend went to police because she received text messages that she t...