It's still a little early to celebrate, imo. The introduction of this federal bill by Rep. King has been anticipated for some weeks whilst he has been trying to marshal stronger Republican support, and at present it is at the introductory phase with the possibility of debate in both chambers and probably opposition from various interest groups.
I understand that King has gone to some lengths to assure states that they retain the right to opt out of it. With Delaware, New Jersey and Nevada already having legalisation laws on their books, and with several other states seriously considering the possibilities, it's now a little late to start trying to impose a federal framework, but that's the first prize for the land gambling industry and the AGA, and it will undoubtedly be protectionist and unwieldy.
There is also speculation that two other federal attempts to legalise online poker are in progress but not yet launched - one by Texas Rep. Joe Barton in the House and another in the Senate by Nevada Sen. Harry Reid - his third attempt (the others failed due to concerns about Nevada favouritism, political infighting over support, running out of time, and lack of respect for the sovereignty of tribes and states.)
As has been commented here before - be careful what you wish for - federal involvement often carries with it all sorts of ass-backwards political problems and provisions that hamper true competition and therefore better deals for players.