It's pretty difficult. E-Filing isn't as simple as a web service. I believe that if it were to actually do the e-filing, the people who ran the e-filing would

It's pretty difficult. E-Filing isn't as simple as a web service. I believe that if it were to actually do the e-filing, the people who ran the e-filing would have to submit to federal background and clearance checks at those people's expense and the servers it ran on would have to probably get FISMA High certification, provided it actually posted to the Efiling API. That's just my speculation, fwiw. But I think that's true.