mr. goss? show mr. goss: there were actually a number of factors in the recent tax bill as chairman johnson already alluded to. the trustees have not at this point taken into account sort of the macro or the dynamic scoring effects and we will be looking at that. the other factors that were built into the tax bill which are the payroll tax changes, the pass through and the removal of the individual mandate have on balance had relatively small yet effects, some of them would create a little bit more revenue, some a little bit less revenue. in fact, we project over the long-term that the sort of direct or first order effects of the tax bill would be essentially negligible for the social security -- >> well, then, mr. goss, you have different information than i have and that's why i asked the question. pass through businesses, the growth of those businesses now with the incentive that i just mentioned would contribute to the erosion of the payroll tax base, would it not? mr. goss: i believe that is true and

mr. goss, welcome back. please proceed with your testimony. >> thank you very much. it's a pleasure to be with you here today to talk about the 2018 trustee's report. congress, by the way, has received from the trustees every single year starting in 1941 this annual report as you have required in the law. i just first of all want to thank both of you in your oral statements for talking about the nature of the coming shortfalls that we have for social security which we have so many years now have discussed are largely about the demographics, about the fact that each distribution in our population is changing because the drop of birth rates in the 1960s. it's like the tide, inevitable. let me speak briefly about three main items that are really the changes in this trustee's report compared to the last. first, based primarily on continuing the lower than expected disability application and incidence rates through 2017, to levels below what we achieved at the last economic cycle in 2007, rejected