I am only half joking, but I can see advertising already. "Make money the way insiders do".
The STOCK Act (or Ethics in Government Act, actually) only requires reporting within 30-45 days of purchase/sale, so your fund will lag behind whatever market-moving events they're trading on.
If you copy the long term plays it could still be viable.
You wouldn't know if it's long term.
Day 1 - stock purchase
Day 45 - reported
Day 46 - you buy or not?
Day 45 - stock sold
Day 90 - reported
Day 91 - you've already lost
I mean investments that are typically long term, such as LEAPS, and as an example buying them if they're still at the same price they were bought by the senator at.
I think the site is definitely a good start. I would like to see accumulated data and charting. Which stocks have been bought and sold by week or month, etc.