Image copyright EPA Image caption Barack Obama to be “inviting speaker” in Iowa
The former vice-president Joe Biden has seen his approval ratings tumble, with an NBC/Wall Street Journal poll showing him losing popularity amongst both Democrats and independents.
With President Donald Trump at nearly all-time highs in the same poll, Mr Biden has a difficult challenge ahead in 2022, when he is expected to run for the party’s presidential nomination.
The early steps he took – championing generic healthcare, instituting hate crime protections and spearheading increased Medicare spending – have helped to build trust in him as a leader, his team says.
But with his better-than-expected performance in 2012, he wants to build on that now to showcase himself to voters, even if he suffers a setback in the polls.
In May, Mr Biden appointed five personal advisers to review his own health records and those of many other political figures, to get a better grasp of his health and medical history – and, crucially, blood pressure.
Image copyright NBC Image caption Joe Biden hopes it will help future candidates – and voters
His team says it also reviewed records belonging to all former vice-presidents to ensure that they are not advocating for campaign roles, regardless of which party they belong to.
“The objective of that is because we’re all having such a hard time finding health issues that are unusual,” said Mr Biden’s spokeswoman, Kendall Marr.