The most common and most likely answer to this crossword clue is the 10 letter word ADVISEMENT
I've seen this crossword clue in Financial Times
A
D
V
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S
E
M
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T
Buddy explains!
The straight part
We know that "careful consideration, in America at least" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case careful consideration, in america at least = advisement.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 ADVISEMENT mean?
ADVISEMENT noun- Consideration or deliberation.
- Advice, counsel.