Why or why not should the united states concern itself with what china is doing?

Uh, trading? Immigrants? WAR?

There are a lot of reasons why america should concern itself with wath China is doing, like...

The Recycling Shortage (thingy) - China put stricter guidelines for other country's waste that they deposit to China.

Immigrants - Wonder why (maybe all) major cities has a China Town? Yeah, immigrants.
More people = Economy goes up
More tourists = Cash

War - Maybe not today, but in the past, people were concerned if China was gonna start a World War.

“destroyers for bases agreement in the destroyers for bases agreement between the united states and the united kingdom on september 2, 1940, fifty caldwell , wickes, and clemson class us navy destroyers were transferred to the toyalbnavy from the united states navy in exchange for land rights on british possessions.” i hope this you .

They were constantly being overlooked as a people and were being controlled by people who weren't really native to their homeland.