National Minimum Drinking Age Act

However, these changes were soon followed by studies showing an increase in motor vehicle fatalities attributable to the decreased MLDA. In response to these findings, many states raised the minimum legal drinking age to 19 (and sometimes to 20 or 21). In 1984, the National Minimum Legal Drinking Act, written by Senator Frank Lautenberg (D-NJ) and influenced by Mothers Against Drunk Driving (MADD), required all states to enforce a minimum legal drinking age of 21 or else risk losing 10% of all federal highway construction funds.

Question: is the drinking age 21 everywhere in the us
Answer: yes