President Trump Donald John TrumpFederal prosecutor speaks out, says Barr 'has brought shame' on Justice Dept. Former Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick MORE on Sunday urged Republican lawmakers not to fall into the "fools trap" of saying his July 25 phone call with Ukrainian President Volodymyr Zelensky was "not perfect, but is not impeachable."

In a tweet he again referred to the conversation at the center of the House impeachment inquiry, in which he urged Zelensky to investigate former Vice President Joe Biden Joe BidenFormer Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick Bloomberg rolls out M ad buy to boost Biden in Florida MORE, as "perfect."

"The call to the Ukrainian President was PERFECT. Read the Transcript! There was NOTHING said that was in any way wrong. Republicans, don’t be led into the fools trap of saying it was not perfect, but is not impeachable," Trump tweeted.

"No, it is much stronger than that. NOTHING WAS DONE WRONG!" he added.

The call to the Ukrainian President was PERFECT. Read the Transcript! There was NOTHING said that was in any way wrong. Republicans, don’t be led into the fools trap of saying it was not perfect, but is not impeachable. No, it is much stronger than that. NOTHING WAS DONE WRONG! — Donald J. Trump (@realDonaldTrump) November 10, 2019

Trump has frequently used the refrain "read the transcript!" to respond to critics of the conversation he had with Zelensky, while Democrats and some conservative critics have argued that it was improper for the president to press a foreign leader to open a criminal investigation into Biden, a front-runner for the 2020 Democratic nomination.

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Republican defenders of the president have largely argued that the president's actions were not improper because, they assert, military aid to Ukraine was not held up over the request for an investigation into Biden and his son, Hunter Biden.

Some GOP lawmakers have, however, criticized the president for bringing up an investigation into Biden, such as House Armed Services ranking Republican member Rep. Mac Thornberry William (Mac) McClellan ThornberryOvernight Defense: Appeals court revives House lawsuit against military funding for border wall | Dems push for limits on transferring military gear to police | Lawmakers ask for IG probe into Pentagon's use of COVID-19 funds Democrats push to limit transfer of military-grade gear to police Trump payroll-tax deferral for federal workers sparks backlash MORE (Texas), who called Trump's actions "inappropriate," but not impeachable.