evidence: Donald Trump and Ron DeSantis traded memes and criticisms while, elsewhere on the trail, South Carolina Sen. Tim Scott made an unusual warning about Chinese students in the U.S., President Joe Biden slammed a decision to restrict abortion in a key swing state -- and a suspected Democratic primary candidate may have just sent out his first bus of the cycle. [...] Former President Trump and his campaign spent the day seizing on the 60-day deadline of what he has called the "kiss of death" timeline for GOP primary rival DeSantis. [...] Trump's team launched a "kiss of death" countdown and has been posting social media compilations of DeSantis' gaffes throughout the cycle -- as well as fundraising off of it. The DeSantis campaign fired back with a "Trump accident tracker."