I checked this earlier this week. It is a waste of time. The administration promises a vague response. They will not take concrete action. First Amendment. Maybe they will tell you it is primarily a matter of state governance. I've written letters to public officials for a long time concerning a variety of matters. We are too small a group. The fact that former Jehovah's Witnesses who are already very vocal against the Witnesses will discount the importance. With software now, it is even worse than the vague letter. If I complained about a war, I would get a generic letter concerning the war. Now if I write about a war, the software sends me a letter about an agricultural bill.
This is not truly a federal matter. There may be some funding. Sexual abuse may be a federal crime on federal land or in the military. Primarily, though, it is a state crime. The states and colonies existed long before the U.S. Constitution was ratified. I never realized this until law school. The White House does not have much jurisdiction in the matter. State petitions might make more sense.
If you are going to do it, it would be wiser to be against all sex abuse rather than only Witness sex abuse. It would be a clear violation of the First Amendment for any state to ban the two-witness rule. The only way I see the two-witness rule being abolished if there is internal protest from loyal, die hard Jehovah's Witnesses. You have to distiinguish what the WBTS does from what individuals do. Conti's facts are atypical. Rick Simons said so.
I honestly feel that discussing the abuse rules of the WTBTS with neighbors and co-workers accomplishes far more than a White House petition. Obama has limited time. He will not squander his capital on this matter. Let us be honest. We are upset b/c we were Witnesses once. Most Americans can not give a damn. Have you seen Obama rebuke the pope? Besides, people may not be aware of this but Obama is a big fan of religion. My specialty has been Cons'l problems when government funds faith-based programs. Bush established an official White House Office and established executive, discretionary funding for such programs. When Obama was elected, the progressive bar was so happy. Certainly, a constl law prof would understand the serious violations. Obama extended the programs. He is crazier about these programs than George Bush was.