Republicans are making a risky bet by opposing Biden’s infrastructure plan.

The Senate majority leader said Democrats' current opportunity comes around “maybe twice a century.”

The U.S. labor movement has been moribund for decades, but a high-profile unionization drive at Amazon.com Inc. may be just what it needs to revive its fortunes. That's because Amazon workers embody a new working class that may start to develop the kind of solidarity that existed among factory workers…