An attorney in the same firm as one of the lawyers representing the whistleblower who has accused President Trump of pressuring Ukraine to investigate 2020 Democratic front-runner Joe Biden has slammed the president's allies.

Bradley Moss, a partner at whistleblower attorney Mark Zaid’s firm, spoke with the Washington Examiner about the case.

The whistleblower complaint, deemed “serious” and “urgent” by Intelligence Community Inspector General Michael Atkinson was allegedly prompted by a conversation Trump had with Ukrainian President Volodymyr Zelensky in July during which Trump reportedly urged Zelensky to investigate Joe Biden and his lobbyist son, Hunter.

“What you’re seeing is a smear campaign against this whistleblower — and someone has to speak up,” Moss told the Washington Examiner.

Moss, who also handles whistleblower cases, said he is speaking out as the public face of the response, though he is not representing the whistleblower and has been “walled off” from the whistleblower's identity and the contents of the whistleblower complaint. The whistleblower is being represented by Zaid and Andrew Bakaj, a former CIA officer who is heading up legal efforts on the whistleblower's behalf. Both have criticized Trump previously.

Over the weekend, Moss tweeted that “there is a special place in the fiery pits of Hell for ‘law and order’ conservatives who smear a whistleblower who made a protected disclosure through proper channels as outlined in federal law."

Though Trump claimed the "so-called whistleblower" had partisan motivations, Moss pushed back against attacks on the whistleblower by the president and his allies.

“They don’t tolerate anyone providing information for oversight purposes, even when done lawfully,” Moss said. “These are despicable remarks because this person did this process exactly the way the law allows.”

Moss said the 1998 law that governs this kind of complaint wasn't written for a case where the whistle is being blown on the president, but on someone at the level of the director of national intelligence or lower. The president, Moss said, wields wide constitutional powers in the national security arena and might not be subject to this law.

“He’s trying to make this all about the idea of it being a partisan smear and another witch hunt,” Moss said. “And he’s trying to defame and attack someone who raised a concern lawfully. That’s disgraceful.”

And Moss pushed back against the anonymous claim that the whistleblower had gotten his or her information secondhand and that hearsay was the sole basis of their complaint. Moss said he viewed the anonymous quote "as nothing more than a political smear from someone connected to the administration." Under the law, a whistleblower complaint must clear a significant burden for the inspector general to deem it credible and of urgent concern, and Moss said he would be “shocked” if a Trump appointee like Atkinson would validate the complaint on the whistleblower's secondhand say-so alone.

"Unless you’re telling me Michael Atkinson is secretly an anti-Trumper, then I’m sorry, there’s clearly some meat on these bones," Moss added.

Moss also said there are only a few scenarios in which a complaint against a president could qualify as an urgent concern.

“Bribery and extortion come to mind,” he said.

Moss said any court battle would be a “completely unprecedented legal case“ and that the best chance Democrats have would be subpoena powers “in the context of potential impeachment.”

And Moss warned the outcome of this fight would have lasting ramifications for both parties.

“Imagine the scenario in a few years if there’s a Democrat in the Oval Office — are you ready to have this precedent applied when it comes to a whistleblower, but the president is Elizabeth Warren or Joe Biden or somebody who conservatives don't like?” Moss asked. “In the end, this is all about the legal principle, not Donald Trump.”

When asked whether he believed it was worth investigating allegations of corruption related to the Bidens and Ukraine, Moss said it might be — if done lawfully.

“If there is truly something to that story, let DOJ and let the relevant agencies do their job the way they ordinarily do it," Moss said. "It doesn’t require the president outsourcing diplomacy to his personal lawyer. It doesn’t require the president dangling hundreds of millions of dollars in aid at the Ukrainians saying, ‘Hey, it would be really horrible if something happened to all of this aid of yours, hint hint, maybe you should look at Joe and Hunter Biden.'"

"We don’t need Rudy Giuliani running around pressuring people to conduct investigations on behalf of his client," Moss said.

Trump has promised to release a declassified and unredacted version of the call transcript in question Wednesday.