Is this really true? How does it actually work? You donate $5800 then give them a call and ask for a meeting? I assumed that would take a lot more.
You don't even have to give $5800 in most cases. $1k is plenty to get the attention of junior congressmen and even some less well known senators.
Just to put all this in perspective, it's actually possible to get meetings with these people without giving them money, especially if you're a constituent. But the more money you give, the higher you move up in the priority queue, and it doesn't take much to move to the front of the line.