Trump’s Lawyers, in Confidential Memo, Argue to Head Off a Historic Subpoena

“Ensuring that the office remains sacred and above the fray of shifting political winds and gamesmanship is of critical importance,” they wrote.

They argued that the president holds a special position in the government and is busy running the country, making it difficult for him to prepare and sit for an interview. They said that because of those demands on Mr. Trump’s time, the special counsel’s office should have to clear a higher bar to get him to talk. Mr. Mueller, the president’s attorneys argued, needs to prove that the president is the only person who can give him the information he seeks and that he has exhausted all other avenues for getting it.

“The president’s prime function as the chief executive ought not be hampered by requests for interview,” they wrote. “Having him testify demeans the office of the president before the world.”

They also contended that nothing Mr. Trump did violated obstruction-of-justice statutes, making both a technical parsing of what one such law covers and a broad constitutional argument that Congress cannot infringe on how he exercises his power to supervise the executive branch. Because of the authority the Constitution gives him, it is impossible for him to obstruct justice by shutting down a case or firing a subordinate, no matter his motivation, they said.

“Every action that the president took was taken with full constitutional authority pursuant to Article II of the United States Constitution,” they wrote of the part of the Constitution that created the executive branch. “As such, these actions cannot constitute obstruction, whether viewed separately or even as a totality.”

That constitutional claim raises novel issues, according to legal experts. Under the Constitution, the president wields broad authority to control the actions of the executive branch. But the Supreme Court has ruled that Congress can impose some restrictions on his exercise of that power, including by upholding statutes that limit his ability to fire certain officials. As a result, it is not clear whether statutes criminalizing obstruction of justice apply to the president and amount to another legal limit on how he may wield his powers.

The letter does not stress legal opinions by the Justice Department in the Nixon and Clinton administrations that held that a sitting president cannot be indicted, in part because it would impede his ability to carry out his constitutional responsibilities. But in recent weeks, Mr. Giuliani has pointed to those memos as part of a broader argument that, by extension, Mr. Trump also cannot be subpoenaed.