Republican Rep. Tom Kean Jr. of New Jersey has been absent from Congress for more than a month, missing nearly 50 votes since March 5, while his staff cites unspecified health issues. His GOP colleagues including Jeff Van Drew report being unable to reach him despite repeated attempts, creating uncertainty about a seat in a competitive swing district Trump won by just one point. The timing is particularly damaging for Republicans given Trump's sagging popularity and local headwinds in Kean's district including a new immigrant detention facility and canceled infrastructure funding. The article doesn't specify what health condition prompted the absence or provide any public statement from Kean himself about his status or expected return.