Absolutely Not – the White House had ample opportunities to present a defense
The House Judiciary Committee gave The White House the opportunity to present a public defense from either Trump or his lawyers:
The chairman of the House Judiciary Committee asked President Trump on Friday whether he intends to mount a defense during the committee’s consideration of impeachment articles, setting a deadline of next Friday for Mr. Trump and his lawyers to decide if they will present evidence or call witnesses.
In a letter to the president, Representative Jerrold Nadler, Democrat of New York and the committee chairman, said Mr. Trump has the right to review the evidence against him, ask questions of his accusers during public hearings that begin next week and present evidence and request witness testimony.
“Please provide the committee with notice of whether your counsel intends to participate, specifying which of the privileges your counsel seeks to exercise,” Mr. Nadler wrote.
House Judiciary Panel Asks Trump if He Will Present Impeachment Defense
However, Trump turned them down, calling the whole process "unfair":
Calling the impeachment proceedings “completely baseless”, the White House on Friday dismissed a Democratic invitation for Donald Trump to participate in hearings in the House of Representatives, which the president has framed as a partisan escapade.
In a letter addressed to the House judiciary committee chairman, Jerry Nadler, the White House counsel, Pat Cipollone, gave no indication that Trump planned to send a lawyer to represent him or attempt to call witnesses.
Trump’s non-participation is unprecedented. Richard Nixon and Bill Clinton, the two presidents to face impeachment proceedings in the 20th century, both deployed lawyers and submitted testimony and documents in their defense.
White House dismisses invitation to take part in key impeachment hearing
The White House also took pains to block testimony by the people who had the most information about his alleged crimes.
Central to Trump's defense is the claim that the evidence against him is "second-hand" or "hearsay", yet the White House officials who could have pointed out errors in this evidence were blocked from testifying by the White House:
The former national security adviser [John Bolton] refused to appear for his scheduled deposition Thursday morning, a House Intelligence Committee official said, and his lawyer informed the panel that Bolton would take the House to court if he is subpoenaed. ...
“We regret Mr. Bolton’s decision not to appear voluntarily, but we have no interest in allowing the administration to play rope-a-dope with us in the courts for months,” the official said. “Rather, the White House instruction that he not appear will add to the evidence of the president’s obstruction of Congress.” ...
The White House has claimed that current and former top presidential advisers, like McGahn and Kupperman, are “absolutely immune” from congressional testimony, and White House lawyers have stepped in to prevent senior officials from complying with requests and subpoenas seeking their testimony. Several of those current and former officials have defied those orders and testified anyway.
Bolton is not alone in abiding by the White House’s directives. Mick Mulvaney, the acting White House chief of staff, will also not appear for his scheduled deposition on Friday, according to an administration official. ...
Impeachment investigators pressing forward without John Bolton
Bolton, Mulvaney, and other officials who were blocked from testifying by the White House were intimately involved in these events, and would have been ideal witnesses in Trump's defense if they had any information that could exonerate him:
Bolton and Mulvaney have intimate knowledge of efforts by Trump and his associates to pressure Ukraine to launch public investigations into the president’s political rivals, as well as the decision to withhold critical military aid to Ukraine. Impeachment investigators are examining whether the hold on military aid — in addition to refusing to arrange a White House meeting between Trump and Ukraine’s president — were tied to the investigations sought by Trump. Already, several witnesses have testified that they believed the issues were linked.
Impeachment investigators pressing forward without John Bolton