It could be, but none of them would pass.

All politics is about compromise, and getting enough votes to pass. Since most of congress is against most bills, the only way to get anything passed is to lump it all together, and give everyone enough so they can hold their noses and vote for it.

In the current climate it's pretty certain no democrats are voting for it, and the majorities in both houses are razor thin. So pretty much every republican needs to be accommodated with some or other pet project or whatever.