Recent history of ENDA
110th Congress 2007-2009
ENDA was introduced in the Democrat-controlled House of Representatives in April 2007, by Barney Frank, et al., as HR 2015. That bill contained gender identity protections. HR 2015 died in the Democrat-controlled committee.
Frank, et al., introduced a new version of ENDA, without gender identity protections, as HR 3685 in September 2007. The Democrats threw us under the bus.
That non-inclusive bill was eventually passed in the House on a bi-partisan vote of 235-184.
Dem for = 200
Rep for = 35
Dem against = 25
Rep against = 159
Dem no vote = 8
Rep no vote = 6
The bill would not have passed without support of the Republicans.
When the bill was sent to the Senate, controlled by the Democrats, but not taken up. The 49 Democrats and 2 Independents comprised the majority, but it was not filibuster-proof.
111th Congress 2009-2011
In June 2009. Frank et al., introduced a trans-inclusive ENDA as HR 3017. Frank eventually had 203 co-sponsors, including a number of Republicans, which virtually assured passage.
However, the Senate Majority leader, Harry Reid, with a filibuster-proof majority of 60, failed to move on the Legislation, thus dooming it. With newly-elected Barack Obama as president, the legislation was a sure thing.
Thrown under the bus again by the Democrats
112th Congress 2011-2013
The Republicans scored historic gains in the 2010 general election, displacing the Democrat majority of the prior two Congresses.