23bidenAs hundreds of gay couples in Michigan flocked to clerks’ offices on Saturday — only to have a federal appeals court again halt same-sex marriages in the state hours later — Vice President Joseph R. Biden Jr. made a forceful case for gay rights, both in the United States and worldwide. “The single most basic of all human rights is the right to decide who you love,” Mr. Biden said, adding that Americans in 20 years would look back with dismay at current discrimination against gays and lesbians in some states. “It’s been a long struggle, and recently there’s been some real progress, but there’s so much left to do,” he said. Mr. Biden has hinted that he may run for president again in 2016. And speaking to an annual gathering of the Human Rights Campaign, an organization that works for gay, lesbian and transgender rights, Mr. Biden sought to underscore his own bona fides as a champion of gay men and lesbians, who make up an important donor base within the Democratic Party. MORE