U.S. Senator Thom Tillis (R-North Carolina) has introduced a bill that says the U.S. Supreme Court has sole authority to adjudicate challenges to the eligibility of presidential candidates relative to the Fourteenth Amendment, section 3.
That part of the bill is only one sentence. See it here. The bill also blocks federal funding for election administration for states that block presidential candidates from a ballot on section 3 grounds.
The bill does not yet have a number.