Castro, whose district includes much of San Antonio, claimed the donors "are fueling a campaign of hate that labels Hispanic immigrants as 'invaders.'" Castro is the twin brother of Democratic presidential candidate Julian Castro and chairs his presidential campaign.

"Sad to see so many San Antonians as 2019 maximum donors to Donald Trump," the congressman wrote, proceeding to name local businesses whose owners gave the maximum to Trump's campaign. Eleven of the 44 donors shown in Rep. Castro's post listed their employment as "retired."

Trump campaign communications director Tim Murtaugh is demanding Castro delete the post.