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President Trump said Tuesday that former national security adviser John Bolton "would know nothing about what we're talking about" if he testified in the Senate impeachment trial, adding that it will be "up to the lawyers" and the Senate to decide whether he appears.

Reality check: A number of witnesses told the House impeachment inquiry that Bolton was present in several meetings and conversations related to President Trump's decision to withhold military aid to Ukraine. Axios also reported in November that current and former administration officials believe Bolton was the most prolific note-taker at the top level of the White House.

  • Former National Security Council official Tim Morrison told impeachment investigators Bolton met privately with the president in August to convince him to release nearly $400 million in frozen military aid to Ukraine.
  • Former White House official Fiona Hill recounted an episode during which Bolton told her, “I am not part of whatever drug deal [EU Ambassador Gordon] Sondland and [acting chief of staff Mick] Mulvaney are cooking up,” and asked her to relay that message to White House lawyers.
  • Bolton's lawyer confirmed in November he was a "part of many relevant meetings and conversations" that would be significant to the impeachment inquiry.

The state of play: Bolton said on Monday that he would testify in Trump's impeachment trial if the Senate subpoenaed him. However, that would require four GOP senators to vote with Democrats to call him as a witness, and it's unclear whether enough moderate Republicans would be willing to break ranks.

  • Senate Majority Leader Mitch McConnell said Tuesday he plans to move forward on approving rules for the trial without negotiating with Democrats.
  • McConnell has expressed no interest in subpoenaing Bolton, but Minority Leader Chuck Schumer will still likely bring votes on witnesses after each side makes its opening arguments.

Of note: Trump tweeted in November about Bolton and his dealings with Ukraine, stating, "John Bolton is a patriot and may know that I held back the money from Ukraine because it is considered a corrupt country, & I wanted to know why nearby European countries weren’t putting up money also."

Go deeper: Key GOP senators don't want to subpoena John Bolton

Go deeper

Updated 30 mins ago - Politics & Policy

Capitol review panel recommends more police, mobile fencing

Photo: Olivier Douliery/AFP via Getty Images

A panel appointed by Congress to review security measures at the Capitol is recommending several changes, including mobile fencing and a bigger Capitol police force, to safeguard the area after a riotous mob breached the building on Jan. 6.

Why it matters: Law enforcement officials have warned there could be new plots to attack the area and target lawmakers, including during a speech President Biden is expected to give to a joint session of Congress.

CDC says fully vaccinated people can take fewer precautions

Photo: Filip Filipovic/Getty Images

People who have been fully vaccinated against COVID-19 can take fewer precautions in certain situations, including socializing indoors without masks when in the company of low-risk or other vaccinated individuals, according to guidance from the Centers for Disease Control and Prevention released Monday.

Why it matters: Per the report, there's early evidence that suggests vaccinated people are less likely to have asymptomatic infection and are potentially less likely to transmit the virus to other people. At the time of its publication, the CDC said the guidance would apply to about 10% of Americans.

Dan Primack, author of Pro Rata
2 hours ago - Economy & Business

Ripple CEO calls for clearer crypto regulations following SEC lawsuit

Illustration: Sarah Grillo/Axios

Ripple CEO Brad Garlinghouse tells "Axios on HBO" that if his company loses a lawsuit brought by the SEC, it would put the U.S. cryptocurrency industry at a competitive disadvantage.

Why it matters: Garlinghouse's comments may seem self-serving, but his call for clearer crypto rules is consistent with longstanding entreaties from other industry players.