(THE HILL) A spat between former Vice President Joe Biden and Sen. Bernie Sanders (I-Vt.) over social security has brought an issue long considered a sacred cow for Democrats to the forefront of the 2020 race.
The two leading Democratic contenders have in recent days lobbed attacks against each other on social security, as they both engage in an intensifying battle for the nomination with just over a week left before the Iowa caucus.
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Social security is an especially important issue for older Democratic voters, which has emerged as an important base of support for Biden, as experts warn the program faces insolvency in coming years.
The attacks have been hard and personal: the Biden campaign has accused Sanders of running misleading ads on positions the former senator and vice president took as recently as 2018 and as far back as 1984.