WASHINGTON—Meta Platforms META -1.30%decrease; red down pointing triangle Chief Executive Mark Zuckerberg said it was improper for the Biden administration to have pressured Facebook to censor content in 2021 related to the coronavirus pandemic, vowing that the social-media giant would reject any such future efforts. Zuckerberg also said he didn’t plan to repeat efforts to fund nonprofits to assist in state election efforts, a Covid-era push that had drawn Republican criticism and sparked many Republican-leaning states to ban the practice.