Gay nuptials bill part of ‘amicable settlement’ in lawsuit
President Michelle Bachelet plans to sign measure
Final vote on measure expected before end of the month
Measure seeks to end ‘historic discrimination’ against gay couples
Supporters say measure ‘strengthens’ families
U.S. among countries to back proposal
LGBT advocates describe vote as ‘step forward’
Some countries supported it ‘with reservations’
Brief in gay nuptials lawsuit became public this week
Javier Soto made claims on Facebook page
