Almost six in ten Americans say they favor allowing gay and lesbian couples to enter into same-sex marriages, the highest level of support ever recorded in a NBC News/Wall Street Journal poll.In the new survey released Monday, 59 percent of Americans said that they favor same-sex marriages while just 33 percent said they oppose them.View the full poll results here.The numbers have shifted dramatically in the past decade. In 2004, only 30 percent of Americans said they supported same-sex marriage, while 62 percent disagreed. Half of those polled at the time said they strongly opposed allowing gays and lesbians...