Senate Majority Leader Chuck Schumer urged "Trump’s critics and supporters to let the process proceed peacefully and according to the law" in a statement following the indictment of the former president.

"Mr. Trump is subject to the same laws as every American," Schumer said. "He will be able to avail himself of the legal system and a jury, not politics, to determine his fate according to the facts and the law."

Lawmakers on both sides of the aisle took to Twitter to react to the historic indictment on Thursday evening, laying bare the sharp partisan divide when it comes to Donald Trump.

GOP House and Senate members decried the investigation by the Manhattan district attorney as a political prosecution.

Many Democrats, on the other hand, praised the decision as proof "no one is above the law."

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-ABC News' Alexandra Hutzler

Former President Trump is expected to surrender in New York early next week, sources familiar with the matter told ABC News.

While a day has not been firmed up, sources said that Tuesday is the day being discussed by Trump's legal team and the Manhattan District Attorney's Office.

House Speaker Kevin McCarthy said in a tweet that the House GOP will use its power to hold Manhattan District Attorney Alvin Bragg "and his unprecedented abuse of power to account."

"The American people will not tolerate this injustice," McCarthy said, adding that Bragg has "weaponized our sacred system of justice against President Donald Trump."

House Republicans have requested documents and testimony from the Manhattan District Attorney's Office in its investigation of Trump, but Bragg has said he won't comply.

-ABC News' Lauren Peller

Senior administration officials at the Department of Homeland Security are continuing to "watch closely, particularly in the online environment" surrounding a potential indictment against former President Donald Trump, a senior administration official said.

There is nothing "that rises to the level of being credible and specific" or "actionable," the administration official said. However, the official said that online "there are always things that emerge that will cause people to take note and possibly raise concern."

As the grand jury continues, the lines of communication with local authorities like the NYPD and Capitol Police have been "wide open."

"It's been a several day period of, I'd say, very open and continued information exchange between and among federal and state partners, focused on this issue," a senior administration official said.

-ABC News' Luke Barr