Joe Biden will speak about Social Security in his return to the national stage

WASHINGTON (AP) — Former President Joe Biden returns to the national stage Tuesday to elevate liberal concerns that President Donald Trump’s agenda is threatening the health of Social Security.

The 82-year-old Democrat has largely avoided speaking publicly since leaving the White House in January, which is typically the tradition for immediate past presidents. That’s even as Trump frequently blames Biden for many of the nation’s problems, often attacking his predecessor by name.

Biden...