your ________ is showing

Last winter, the Las Vegas based ad firm R & R partners created the new ad campaign "Your Vegas is Showing" for the Las Vegas Convention and Visitors Authority. While the new campaign, in my opinion, wasn't half as brilliant as the firm's 2003, "What happens in Vegas, Stays in Vegas," the new slogan was pretty clever. 

Fast forward to this fall and Tide debutes an ad campaign with the EXACT SAME SLOGAN as the LVCVA?! 

Tide's new ads endwith the tag line, "Your Tide is Showing" and while it may be slightly more relevant to Tide's product [although LVCVA's use is more clever] it still makes them look like nothing but a bunch of COPYCATS. 

This leaves me with a few questions: 

1. Aren't slogans copyrighted or something? 

2. There had to have been a lot of focus groups conducted before the campaign debuted, were the deaf/blind/all of the above?  

3. There were more than 6 months between when LVCVA's ads hit and Tide's ads hit, doesn't that look a little suspicious? I mean it would be one thing if they both came out within a month of each other, but this just looks like someone said 'hey great idea, lets use it' and THEN put the ads into production.