No, this is not allowed, all calculation and analysis must be in your head. Even writing down your move on your scoresheet before you play it is considered suspicious, although I don't know the current USCF stance- you can always google the rules.
Taking notes during tournament game

at least in FIDE it is illegal, I don't know with USCF but I cannot imagine they would allow it because it is a good thing about OTB chess that you have to use your brain to think 100%
12.3 a. During play the players are forbidden to make use of any notes, sources of information or advice, or analyse on another chessboard.

We played and you played white! I lost my connection and lost 1.5 minutes. I came back and played good but time made me slip. You ran after your win. A win you recieved on a blunder based on a bad connection. It just shows that you are a pussy! You couldn't rematch after winning one luck. That my friend makes you a grade a pussy!

It is ashame that more people on here can't learn some manners. kleelof You can kiss my ass.

It's always nice to see folks making new friends. That's really what chess should be about, isn't it?
Do the USCF rules allow players to take detailed notes during OTB tournament games? For example, what if I want to write down complex lines and analyze them — while I'm sitting at the board?