Celebrities have taken to Twitter to speak out against the harsh order. Kim Kardashian hit back with this particularly well-placed tweet, which draws attention to the problem with the lack of gun control in the US and its citizens compared to immigrants.
Novelist John Green also spoke out about the Muslim visitors being detained at airports, and made an urgent plea to parents.
Rihanna also lent her voice to the issue on both Twitter and Instagram.
"the face you make when you a immigrant #stayawayfromthechickens #iheartnuggets #saveourhens."
Miley Cyrus tweeted a simple message of solidarity with immigrants.
While comedian Billy Eichner had some more... choice words for Donald Trump.
Given that Kim's husband Kanye West has met with Donald Trump, we wonder how he feels about this whole thing?