KEY POINTS
  • President Obama remains the most popular figure in Democratic politics, but that did not stop 2020 candidates from criticizing his administration on free trade and immigration. 
  • Joe Biden came under fire from all sides for his support of Obama's controversial immigration policies. 
  • Strategists and Obama alumni rushed to the former president's defense, saying criticism of Obama does more to hurt the party than help it. 
Democratic presidential hopefuls (from left) Former US Secretary of Housing and Urban Development Julian Castro, US Senator from New Jersey Cory Booker and Former Vice President Joe Biden chat during a break in the second round of the second Democratic primary debate of the 2020 presidential campaign season hosted by CNN at the Fox Theatre in Detroit, Michigan on July 31, 2019.

He might not have shared the stage with anyone this week, but former President Barack Obama was on the lips of many candidates seeking to unseat President Donald Trump in 2020.

The specter of Obama, who remains widely popular among Democrats, loomed large over the two nights of Democratic debates in Detroit this week. Still, the former president's legacy came under its strongest attack yet by members of his own party.