Yes but neither are applicable.
Biden isn’t a candidate presently and isn’t presently engaged in any campaign for office.
https://www.irs.gov/charities-non-p...ion-by-section-501c3-tax-exempt-organizations (organizations are absolutely prohibited from directly or indirectly participating in, or intervening in, any political campaign on behalf of (or in opposition to) any candidate for elective public office.)
And this instance isn’t “political lobbying. “In general, no organization may qualify for section 501(c)(3) status if a
substantial part of its activities is attempting to influence legislation (commonly known as lobbying). A 501(c)(3) organization may engage in some lobbying, but too much lobbying activity risks loss of tax-exempt status.
Legislation includes action by Congress, any state legislature, any local council, or similar governing body, with respect to acts, bills, resolutions, or similar items (such as legislative confirmation of appointive office), or by the public in referendum, ballot initiative, constitutional amendment, or similar procedure.
It does not include actions by executive, judicial, or administrative bodies.