Texas Rep Joaquin Castro (D-Texas), chairman of his brother Julián Castro’s presidential campaign, came under fire after tweeting the names of his constituents who are top donors to President Donald Trump

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The tweet showed a picture with the names of 44 donors as well as their occupations. It reads, “Sad to see so many San Antonians as 2019 maximum donors to Donald Trump… Their contributions are fueling a campaign of hate that labels Hispanic immigrants as ‘invaders.’”

The tweet was posted to Castro’s congressional campaign account on Tuesday. The post came as many politicians are criticizing Trump for his anti-immigration rhetoric, which some have linked to the manifesto written by the El Paso shooter. 

House Minority Leader Kevin McCarthy (R-California) replied to Castro’s tweet mocking former First Lady Michelle Obama saying:

“Targeting and harassing Americans because of their political beliefs is shameful and dangerous. What happened to ‘when they go low, we go high?’ Or does that no longer matter when your brother is polling at 1%? Americans deserve better.”

Tim Murtaugh, Trump’s 2020 communications director, accused Castro of creating a “target list.” 

Sen. John Cornyn (R-Texas) said that Castro’s tweeted was highly inappropriate given recent events and that “encouraging retaliation is dangerous and not what Texans have a right to expect from their members of Congress.”

Castro quickly defended himself tweeting to Murtaugh saying that the “graphic I shared doesn’t have private or personal info — no addresses or phone #, etc. It’s publicly reported info.” He then posted a second response calling Trump’s campaign dangerous for striking “fear of brown-skinned immigrants.”