Some Democrats have criticized Phillips since he mounted a longshot primary bid against the incumbent president last month.
In Long-Shot Challenge to Biden, Dean Phillips Goes Where Few Democrats Dare - WSJ
Rep. Dean Phillips, Democrat challenging Biden, won't run for reelection
Democratic Rep. Dean Phillips says he doesn't want Biden to run in 2024
Rep. Dean Phillips misses filing deadline for Nevada's presidential primary, won't be on ballot
Dean Phillips Launches Democratic Primary Bid, Challenging President Biden
Rep. Dean Phillips (D-MN) is running for president, challenging Presid
Biden's longshot Democratic challengers debate in N.H.
Biden opponent Dean Phillips sees little support from past donors
Dean Phillips announces he won't seek House re-election in 2024 as challenge to second Biden term continues
Dean Phillips on a Biden re-election campaign: 'Let's turn the page
Democratic congressman Dean Phillips launches primary challenge against Biden, Democrats