Comment on Start a Code Club in Your School by S4S Coding.
This is the link to Starting a Code Club.
If you are looking for coding resources for a club see the Code Club Projects Page.
Since coding in languages like Scratch, HTML/CSS etc… is going to be the same in the USA as it is in the UK there’s loads of UK based coding projects you can use in the US.
There’s some good CoderDojo Club Projects as well.