President Joe Biden on Sunday signed the Social Security Fairness Act into law, clearing the way for nearly 3 million public workers including teachers, firefighters and police to see an increase to their Social Security benefits.

The repeal of two provisions will boost Social Security payments for certain beneficiaries. Here's what we know so far.

"The bill I'm signing today is about a simple proposition: Americans who have worked hard all their life to earn an honest living should be able to retire with economic security and dignity — that's the entire purpose of the Social Security system," Biden said during a signing ceremony in the White House East Room. "This is a big deal," he said.