The Trump administration has stepped up an effort to unmask a Reddit user who criticized Immigration and Customs Enforcement (ICE).
After failing to obtain information through a summons issued to Reddit,
the government reportedly issued a subpoena demanding that Reddit provide the information and appear before a grand jury in Washington, DC.

The Intercept described the subpoena today.
“According to a subpoena obtained by The Intercept, Reddit has until April 14 to provide a wide range of personal data on one of its users, whom US Immigration and Customs Enforcement agents have been trying unsuccessfully to identify for more than a month,” the article said
arstechnica.com/tech-policy/20…

Report: US demands Reddit unmask ICE critic, summons firm to grand jury

Trump admin reportedly gets grand jury involved in attempt to identify Redditor.

^{Jon Brodkin (Ars Technica)}