Addressing reporters outside the Long Island federal courthouse after his arraignment, Santos said his case is about being "innocent until proven guilty."

"I have my right to fight to prove my innocence," he said.

The freshman congressman, who was released on bond, said he'll return to Washington to vote on the House Republicans' border security bill Thursday.

"I have to go back and vote tomorrow," Santos said. "We have one of the most consequential vote in this Congress, which is a border bill, and I'm very looking forward to being there."

Saying "the media is not jury or the judge," Santos said he would present evidence of his innocence "to the jurist and to the judge in this courthouse."

"If Congress requested, I will present it to them as well," he said.

Asked by ABC News' Rachel Scott why he would apply for unemployment benefits while he had a job that paid $120,000 a year as alleged in the federal indictment, Santos said, "This is inaccurate information."

"I will get to clear my name on this. During the pandemic, it wasn't very clear. I don't understand where the government is getting their information, but I will present my facts."

"My employment was changed during the time," he said of the period when prosecutors allege he collected $24,000 in unemployment funds under false pretenses. "I don't understand where the government's coming from. I'll present my defense."

Speaking to reporters outside the Long Island federal courthouse following his arraignment, Santos said that he will not resign from Congress as a result of his indictment.

"I'm going to fight my battle," Santos said. "I'm going to deliver. I'm going to fight the witch hunt. I'm going to take care of clearing my name and I look forward to doing that."

Ryan Harris, a federal prosecutor speaking on behalf of the government, laid out the conditions of Santos' bond, which defense counsel had agreed to as "something palatable for both of us."

Among the conditions, Santos can travel within the continental U.S. -- but must notify pretrial services before doing so.

He can travel freely within and between New York City, Long Island, and Washington, D.C.

A spokesperson for the Eastern District of New York confirmed that Santos will not be required to wear an ankle monitor.

Santos' next hearing is scheduled for June 30.

-ABC News' Olivia Rubin and Lucien Bruggeman

Federal prosecutors in Central Islip, New York, accuse Santos of engaging in a "scheme to defraud" his campaign donors.

According to the indictment, Santos solicited donations for his run for office "under the false pretense" that those funds would actually be used for politics.

Instead, prosecutors said Santos spent "thousands of dollars of the solicited funds on personal expenses, including luxury designer clothing and credit card payments."

Santos is also charged with illegally receiving unemployment benefits during the pandemic even though "he was employed and was not eligible for unemployment benefits," the indictment said.

Santos is also charged with lying to the House of Representatives on his financial disclosures. Taken together, U.S. Attorney Breon Peace said. Santos relied on "repeated dishonesty and deception to ascend to the halls of Congress and enrich himself."