Quickly catch up on the day's news

(CNN)Happy Presidents Day! Here's what you might have missed on CNN today:

-- After an epic weekend tweetstorm, a spokesman for the President says Trump is open to improving the federal background check system for gun purchases. (Here's a look at what's in a stalled Senate gun bill.)
-- Investigators are tracking the purchase of 10 firearms by Florida school shooter Nikolas Cruz. Meanwhile, Cruz's host family said they didn't realize they had a "monster" in their home.
-- The Kremlin denies it influenced the 2016 US presidential election and dismisses the indictments of 13 Russian nationals.
    -- Trump ridiculed Oprah as "insecure" in a tweet after CBS aired a "60 Minutes" interview that addressed his presidency.
    -- Scientists are closer to developing blood and urine tests that could enable earlier detection of autism.
    -- KFCs in the UK are running out of chicken.
    -- Search and rescue teams found the site of an Iranian plane that crashed on Sunday, killing all 65 people on board.
    -- Wakanda! "Black Panther" had an epic opening weekend.
    -- Buzzing from the Olympics today: Despite a record number of Winter Olympians, the US has nabbed few medals. A Russian curler is suspected of doping. Lindsey Vonn vowed to stand up to trolls. And it was a fast stint at NBC for US figure skater Adam Rippon. Go here for a recap of the day and here for photos.