The most common and most likely answer to this crossword clue is the 7 letter word HELLION
I've seen this crossword clue in Independent
H
E
L
L
I
O
N
More clues leading to the result HELLION
Buddy explains!
The straight part
We know that "troublemaker in the States" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case troublemaker in the states = hellion.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does HELLION mean?
HELLION noun- An unruly, rowdy or mischievous person
- An evil person
- The larva of the dobsonfly
- Cursed, ill-fated