Several Biden aides and advisers, speaking on condition of anonymity, gave their assessment of how the president and his team view Trump's entry into the race.
Trump made his announcement on Tuesday night as he sought to get a jump on potential rivals for the Republican nomination.
Biden, who defeated Trump in the contentious 2020 election, thus far is remaining mum publicly.
Biden defeated Trump by more than 7 million in the nationwide popular vote tally and by a margin of 306 to 232 in the state-by-state Electoral College that determines the outcome of presidential elections.
A few hours before Trump's announcement, the White House launched a new webpage highlighting the Biden administration's achievements from creating manufacturing jobs and lowering drug prices for seniors to gun reform.