US Democratic Congressman Alexandria Ocasio-Cortez is being prosecuted for blocking people on Twitter.
Former New York State MP, Dov Hikind, and Joseph Saladino, a YouTube personality who comes forward for the Congress, filed the claims.
Both cite a recent ruling against President Donald Trump, who said he was breaking the law by blocking critics on the social media platform.
Men say the law should apply to all politicians.
"Trump is not allowed to block people, will standards also apply?" Mr. Saladino tweeted.
Ms. Ocasio-Cortez's office has not yet commented on the trial. His Twitter account has 4.7 million followers.
Earlier this week, a New York court ruled that President Trump was violating freedom of expression laws by blocking his critics on Twitter.
"The First Amendment does not allow a public official who uses a social network account for all kinds of official purposes to exclude people from a normally open online dialogue because they have expressed points with which the agent disagrees, "said the judgment.
According to Mr. Hikind's trial, the congressman – commonly known under his AOC initials – has blocked him after criticizing him, as well as his political views.
The complaint alleges that Mr. Hikind, "a staunch supporter of Jewish values," was blocked "solely because of his speech in favor of Jewish values and Israel". This restricts Mr. Hikind's participation in "a public forum," he says.
More recently, he criticized it when she tweeted that the US government was running "concentration camps" on the Mexican border.
Ms. Ocasio-Cortez is one of the many detractors of detentions on the southern border, saying people are being held in cramped and unhealthy conditions.
The president said the border force was struggling to cope with a massive new influx of immigrants and wanted money for a border wall.
Ms. Ocasio-Cortez was part of a group of lawmakers who recently visited the southern border.
Following his visit, US officials opened an investigation into a secret Facebook group mocking Latin and Latino migrants and congressmen.