Control start point of nested list

After stretching the list horizontally according to Horizontal space in lists, I've encountered a problem where the nested list items start too deep inside. How can I pull it back to the left where the parent item description starts?

1.    ############################
############################
A. Nested item A          % <-- [Bad] Too deep
B. Nested item B
C. Nested item C

2.    ############################
############################
A. Nested item A
B. Nested item B
C. Nested item C

3.    ############################
############################
A. Nested item A             % <-- [Good] Pull it back to the left to start at the same starting point of the parent item description
B. Nested item B
C. Nested item C

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This is all explained in the the enumitem documentation. (Check leftmargin=*) And now that you have a working sample document, it's better to post that than just the description of what you want. –  Alan Munn Aug 2 '11 at 13:32
I think the downvotes are a little harsh. Yes, given that the OP had asked a previous question, the solution to this one should have been obvious. But as a stand alone question, this is a perfectly reasonable question. One with an obvious answer, sure, but not worthy of downvoting, in my opinion. –  Seamus Aug 2 '11 at 14:23
agreed & upvoted;) –  mbork Aug 2 '11 at 15:40
And when OP gets to level 2 or 3, he will start reading docs himself:P –  mbork Aug 2 '11 at 15:41

You are looking for leftmargin=* it's on page 4 of the enumitem manual.

\documentclass{article}
\usepackage{enumitem}
\begin{document}
\begin{itemize}[labelsep=2cm]
\item No nested list
\item Nested list:
\begin{itemize}[leftmargin=*]
\item More
\item Things
\end{itemize}
\end{itemize}
\end{document}

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Although really, at eleven pages, you probably could have just read the whole enumitem manual yourself... –  Seamus Aug 2 '11 at 13:31