Trump transition live updates: Trump announces pick for energy secretary

Trump has nominated his former SEC chair, Jay Clayton, as the U.S. Attorney for the Southern District of New York, the president-elect announced on social media.

The position requires Senate confirmation.

Clayton was one of the candidates who interviewed for the attorney general job, as ABC News previously reported.

The longtime corporate lawyer would enter the role with little-to-no experience prosecuting criminal cases.

Prior to running the SEC, Clayton worked almost exclusively as a corporate attorney, with the exception of a two-year clerkship and a brief internship for the U.S. Attorney's Office for the Eastern District of Pennsylvania.

Clayton spent most of his career at the law firm Sullivan & Cromwell, where he represented hedge funds, wealthy investors, large banks, and massive corporations such as Deutsche Bank, UBS, and Alibaba Group. Clayton represented Goldman Sachs during the 2008 financial crisis and Barclays when it purchased Lehman Brothers' assets out of bankruptcy.

-ABC News' Peter Charalambous

Trump officially announced he has selected Robert F. Kennedy Jr. as the Health and Human Services secretary.

"For too long, Americans have been crushed by the industrial food complex and drug companies who have engaged in deception, misinformation, and disinformation when it comes to Public Health," he said in a statement, adding that Kennedy will "restore these Agencies to the traditions of Gold Standard Scientific Research, and beacons of Transparency."

The position requires Senate confirmation.

Kennedy is an anti-vaccine activist who founded the Children's Health Defense, a prominent anti-vaccine nonprofit that has campaigned against immunizations and other public health measures like water fluoridation.

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Trump picks Robert F. Kennedy Jr. to lead HHS

President-elect Donald Trump said he has picked Robert F. Kennedy Jr., a vaccine skeptic, to lead the Department of Health and Human Services, he wrote in a social media post Thursday.

ABCNews.com

Trump said JPMorgan Chase CEO Jamie Dimon will not be invited to be a part of his administration, after Dimon had already repeatedly indicated that he doesn't intend to join the second Trump administration.

"I respect Jamie Dimon, of JPMorgan Chase, greatly, but he will not be invited to be a part of the Trump Administration. I thank Jamie for his outstanding service to our Country!" Trump said on social media Thursday.

A few weeks ago, Trump falsely posted on his social media that Dimon had endorsed him. Dimon, through his spokesperson, immediately refuted the claim.

-ABC News' Soo Rin Kim, Kelsey Walsh and Lalee Ibssa

Sen. Richard Blumenthal, D-Conn., told reporters Thursday he "can name between five and 10 Republicans who are seriously considering voting against" Matt Gaetz's nomination for attorney general.

Blumenthal said the senators are also "insisting that there be a vote," after Trump has urged the incoming GOP Senate majority to embrace recess appointments to install members of his Cabinet.

"Republicans, as well as Democrats, are absolutely aghast at the idea that we would allow a recess appointment of the top judicial officer in the United States of America; that is absolutely abhorrent to the powers and traditions of the United States Senate and the Constitution," Blumenthal said.

Blumenthal, who is a member of the Senate Judiciary Committee, has also demanded that the House ethics report on Gaetz regarding allegations of sexual misconduct and illicit drug use be released following Gaetz's resignation from Congress.

-ABC News' Rachel Scott, Benjamin Siegel and Hannah Demissie