Yes, scoria is found in the United States. It is a common volcanic rock found in many areas with volcanic activity, including:

* Hawaii: The volcanic islands of Hawaii are known for their abundance of scoria, which is often found in the form of cinder cones.

* Oregon: The Cascade Range in Oregon is home to several volcanoes that produce scoria, including Mount Hood and Mount Jefferson.

* California: The Sierra Nevada and the San Francisco Bay Area are also home to volcanic rocks, including scoria.

* Arizona: The San Francisco Volcanic Field in Arizona is another area where scoria is found in abundance.

* New Mexico: The Jemez Mountains in New Mexico are home to several volcanoes that produce scoria.

Scoria is also found in smaller quantities in other parts of the United States where volcanic activity has occurred in the past.

So, yes, scoria is definitely found in the US!