21.   Also, each company proposal had to include a business plan on how it would finance a full-scale rocket and operate it at a profit.

22.   Although that proposal has the most political support, two other plans are being considered.

23.   Amid the uncertainty, several proposals have solid odds of becoming law.

24.   Any new proposal would have to undergo environmental and regulatory approval, which could take years.

25.   As part of that, Hayden said his proposal to have college students work in schools for either college credit or tuition reductions would help make schools more effective.

26.   At this late stage, this person said, any new proposal would have to be one that does not require any market testing.

27.   Because the proposal has so many elements, its supporters admit that it will not be easy to pass in its entirety.

28.   Blair Horner, the legislative coordinator for the New York Public Interest Research Group, said that the proposal had a few worthy provisions.

29.   Both proposals have strong support in the Republican-dominated legislature, which is expected to pass a law this year.

30.   Aiello cautioned that the proposal would have a long way to go in getting the approval of the owners.