Biden called for a constitutional amendment saying former presidents don’t have any immunity from federal criminal indictments, trials, convictions or sentencing.

Biden also expressed support for Congress to create term limits for Supreme Court justices, saying he favors 18-year terms, which he believes would prevent one president from having multigenerational influence on the judiciary.

Even with the presidential push for reforms, getting such legislation passed through Congress is unlikely. Before he called off his presidential run, Biden huddled with House Democrats, saying he would need their help to enact changes — and most likely need to persuade some Republicans to cross the aisle, given their majority in the House and Democrats’ narrow majority in the Senate.