Americans expect communication to be straightforward. When you have something to say, say it clearly rather than hinting, implying, or expecting others to read between the lines. This applies whether you’re speaking or writing.
The responsibility for being understood falls primarily on you as the communicator—it’s your job to be clear, not the listener’s job to decode your meaning. This doesn’t mean being rude or blunt; you can be direct while still being warm and considerate. But Americans get frustrated with circular approaches, excessive qualification, or communication that makes them work to figure out what you actually mean.
If you want something, ask for it. If you think something, say it.
If you have a point, make it. Americans respect straight talk and view indirectness as either inefficient or evasive.