The allowance of insider trading within the major branches of government has to end, as it is so wrong on so many levels that it should never have been allowed to become a "perk" of office, ever. If a bill can't be passed this year, you should ask that it end voluntarily along with money held in overseas accounts, by any members of congress or the executive offices. I suggest that the American people be informed of any persons who refuse.
I think you need to go further when drafting a bill that would state ALL trading be prohibited while in office. The bill would require that all in office, be required to liquidate all of their class asset investments, before being sworn into office? The money should then be placed in US Treasuries until they leave office.