Trump says number of 'non-working holidays' in America 'must change' in Juneteenth social media post

President Donald Trump at the White House.

Kevin Lamarque/REUTERS

• Trump criticized the number of American holidays and claimed they cost billions in productivity.
• The post was made on Juneteenth, a federal holiday that Trump previously supported.
• The president said the number of non-working holidays "must change."

In a social media post on Juneteenth, President Donald Trump said America has "too many" holidays where people don't work.

"Too many non-working...