They should dump the previous bills before even attempting this one.
THAT would show good intent, and would also go a ways to keeping this from being a precursor to confiscation.
If there is any wiggle room for them at all, either by simply re-reading it a different way and taking the same sentence to mean differing things as they always do, it's not a good idea ot try this.
WHICH previous bills?
The existing "laws" are not bills, they are "Law of the land".
This is only one of several good bills now in congress, but it will never escape from committee without our help, and neither will any other pro-RKBA bill.
I am very disappointed that so many here do not understand this bill, it's intent, or why it's passage is essential to regaining our full RKBA.
I can explain all the above, but it would be a book length post!
For more back-round I suggest studying the topics and post at http://www.nfaoa.org
Which shows that you still don't understand the situation. If they dropped the "previous bills", that is the 1934 National Firearms Act, and the provision of the Firearms Owners Protection Act (slipped in at literally the last moment) which banned further registrations of newly manufactured or imported machine guns, there would be no need for this bill. And Jefferson, Franklin, Madison and others might stop spinning in their graves. (I've heard tell that Philadelphia gets a good proportion of it's electricity from Franklin's twirling).