Immigration and Customs Enforcement officials said at a tech industry conference last week they are seeking algorithms that can "conduct ongoing social media surveillance" of visa holders that are considered high risk, according to ProPublica.

Why it matters: The announcement of the program, later named "Visa Lifecycle Vetting," spurred backlash from civil liberty groups and immigrants. ProPublica notes that, taken in conjunction with Trump's calls for "extreme vetting" and his campaign proposal for a Muslim ban, there is concern it could be discriminatory toward Muslim visa holders. Acting deputy association director for information management at ICE Homeland Security Investigations, Alysa Erichs, said the goal is to have "automated notifications about any visa holders' social media activity that could 'ping us as a potential alert.'"

• But, but, but: According to Alvaro Bedoya, the executive director of Georgetown Law's Center on Privacy and Technology, ICE is "building a dangerously broad tool that could be used to justify excluding, or deporting, almost anyone."
• A group of engineers, computer scientists, and other academics wrote to acting DHS Secretary Elaine Duke of their "grave concerns" about the program, saying it would likely be "inaccurate and biased."
• Carissa Cutrell, an ICE spokeswoman, told ProPublica the "request for information...was simply that - an opportunity to gather information...to determine the best way forward."