They might be saying that in public but they don't want Chinese ships near the US.
Its international waters, nothing you can do about it. In war, sure they don't want hostile ships near the U.S. But in peace, nothing to complain. Best they can do is observe. Just as stated in op.
Five Chinese navy ships are currently operating in the Bering Sea, off the coast of Alaska, the first time the US military has seen such activity in the area, Pentagon officials said Wednesday.
The officials said they have been aware in recent days that three Chinese combat ships, a replenishment vessel and an amphibious ship were in the vicinity after observing them moving toward the Aleutian Islands, which are split between US and Russian control.
They said the Chinese ships were still in the area, but declined to specify when the vessels were first spotted or how far they were from the coast of Alaska, where President Barack Obama is winding up a three-day visit.
“This would be a first in the vicinity of the Aleutian Islands,” one defence official said of the Chinese ships. “I don’t think we’d characterise anything they’re doing as threatening.” The Pentagon official confirmed that the five ships were operating in international waters.
Pentagon officials also said there was no information suggesting the Chinese ships had gone through the Bering Strait, a narrow waterway north of the sea that abuts Alaska.