Conversation so far:
What role did Joe Lieberman play in the creation of DHS?
Senator Joe Lieberman led the fight to create a new Department of Homeland Security.
Did Joe Lieberman's efforts to create a new DHS lead to the creation of the department?
After the terrorist attacks on September 11, 2001, Joe Lieberman introduced legislation to reorganize the federal government to better protect the American people from terrorism and natural disasters.
Was Joe Lieberman's anti-terrorism legislation popular?
After months of opposing the plan, the White House eventually endorsed the concept.

Question: What happened next?
Self-contained rewrite: What happened next after the White House endorsed Joe Lieberman's anti-terrorism legislation?