Democratic presidential hopeful Sen. Kamala Harris. Photo: Justin Sullivan/Getty Images

Sen. Kamala Harris (D-Calif.) said during an MSNBC town hall Tuesday that President Trump's derogatory tweets about Democratic presidential rival Joe Biden are reasons "why he should not be president of the United States."

Details: Harris cited Trump's tweet during a state visit to Japan in which he said he "smiled" at North Korea calling the former vice president "a low IQ individual, & worse." "I don't care what the differences in terms of party affiliation, it is wrong, it is contrary to our values, and it is contrary to the best interests of our country and the integrity of our country," she said.

The big picture: At the town hall in Spartanburg, South Carolina, Harris formally unveiled her plan to require states trying to restrict abortion access to pre-clear any new reproductive health laws with the Justice Department.

  • Harris discussed with moderator Lawrence O'Donnell a range of issues including "Medicare for All" and racial profiling.
  • She praised Rep. Justin Amash (R-Mich.) for putting "country before party" by saying President Trump had engaged in impeachable conduct.
  • Harris also doubled down on her support for taking steps toward impeaching Trump, saying there's a "clear track record" of the president and members of his administration obstructing justice.
"The current attorney general of the United States, who I questioned in connection with the Judiciary Committee ... clearly thinks his job is to represent the president and his peculiar interests as opposed to representing the people of the country in which we live. So there is a lot of work to do and I plan on seeing it through."

Go deeper: Kamala Harris on the issues, in under 500 words

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Exclusive: Conservative group launches $2M Supreme Court ad

Screengrab of ad, courtesy of Judicial Crisis Network.

The Judicial Crisis Network is launching a $2.2 million ad campaign to put pressure on vulnerable Senate Republicans in battleground states to support a quick confirmation when President Trump announces his Supreme Court nominee.

The big picture: "Follow Precedent," previewed by Axios, is one of the first national and cable television ads to run following Justice Ruth Bader Ginsberg's death Friday.

Updated 10 mins ago - Politics & Policy

CDC says it mistakenly published guidance about COVID-19 spreading through air

CDC Director Robert Redfield. Photo: Anna Moneymaker/Pool/Getty Images

The CDC has removed new guidance that acknowledged airborne transmission of the coronavirus, posting in a note on its website that the guidance was only a draft and had been published in error.

Why it matters: The initial update — which was little noticed until a CNN story was published Sunday — had come months after scientists pushed for the agency to acknowledge the disease was transmissible through the air. The CDC previously said that close person-to-person contact was the bigger concern, and the language has been changed back to erase the warning about airborne transmission.

Ruth Bader Ginsburg will lie in state in Capitol's National Statuary Hall

Photo: Getty Images

House Speaker Nancy Pelosi announced Monday that the late Supreme Court Justice Ruth Bader Ginsburg will lie in state in the Capitol's National Statuary Hall on Friday.

The state of play: The Supreme Court also announced Monday that Ginsburg will lie in repose on the front steps of the building on Wednesday and Thursday, allowing the public to pay respects to the late justice outside.