Four passengers aboard a cruise ship that arrived at a port in the U.S. state of New Jersey have been taken to a hospital for coronavirus testing. New Jersey Gov. Phil Murphy said in a statement that officials with the Centers for Disease Control and Prevention (CDC) screened 27 passengers from the Royal Caribbean who had recently traveled to the Chinese mainland. Murphy said 23 passengers were cleared and four were being tested at a hospital in what the CDC said was out of an abundance of caution.
上述文章摘自CGTN原文，有两处不明白的：
第一： in the US state of New Jersy 这里总感觉有点奇怪 不应该是 in the state of New Jersy in the US?
第二： in what the CDC said was out of an abundance of caution. 这里的what是said的宾语么， in +what宾语又是作什么成分？
如题