Trump also implored supporters to back Scott against Democratic Sen.
Trump took the stage once again to urge voters to turn out for DeSantis in the primary.
Now, he said, "I know the wonderful people and I know the scum". "You see what happened. I have kept my promises".
In May, Trump announced tariffs on US$50 billion of Chinese goods. China has moved to impose tariffs on USA soybeans.
Many questioned if the billionaire president had ever bought groceries in his life.
Asked why Trump chose to endorse DeSantis over him even though both are conservative Republicans, Putnam suggested it was all about Washington politics.
In a sign the trade stand-off is reverberating through Chinese politics, the Politburo signalled Tuesday that policymakers will focus more on supporting economic growth amid risks from a campaign to reduce debt and the dispute with Trump. And Trump is making clear that after almost two years of base-pleasing policies, he is not going to change what got him where he is.
The 30-second ad is narrated by DeSantis' wife Casey, whose pitch for her husband includes telling viewers that he is "an wonderful dad" who loves "playing with the kids" and "reads stories" to them. So he's airing an ad that shows him using toy blocks to teach his young daughter how to build Trump's border wall. Bill Nelson (D-FL), has also opened up a three-point lead over Nelson.
Scott didn't join Trump at the rally but appeared with him at Tampa Bay Technical High School.
But long-time Florida political analyst Susan McManus is not sure whether the support will still carry weight by the August 28 primary, much less the November general election.
"We've got a message for lawmakers across the country".
"You know, if you go out and you want to buy groceries, you need a picture on a card".
"The time has come for voter ID like everything else", Trump said, before making his claim about groceries.
He claimed credit for more people celebrating Christmas, hailed support from "blacks for Trump" and stated that he is the leading figure in the 160-plus-year history of his party.
Florida, where Trump's Mar-a-Lago Club rises amid manicured greens and gently curved palm trees, is something of a second home for the president, who has dubbed his membership-only retreat "the Winter White House". Then, Trump-backed Georgia Secretary of State Brian Kemp crushed Lt. Gov. Casey Cagle in a Republican gubernatorial runoff last week.