Rep. Tom Kean Jr., the New Jersey Republican who disappeared from public life 88 days ago, has introduced two bills since going MIA — including one as recently as last week. On Friday, he became the lead sponsor of H.R.9061, which would force the federal government to give states clarity on whether Medicaid and the Children’s Health Insurance Program cover early-detection screenings for preeclampsia. His office did not respond to a request for comment.