WASHINGTON — Ten Senate Democrats released a letter Tuesday asking President Biden to support a plan to automatically extend unemployment benefits and send recurring relief checks to Americans during the COVID-19 pandemic, based on certain future economic indicators. Notably, however, the senators are not asking to include the recurring payments and unemployment in the $1.9-trillion economic aid bill currently before the Senate, which includes a one-time $1,400 direct payment for many Americans. Rather, they want Biden to include it in a broad economic development package he hopes to pass later this year. Since the current relief package is being considered by the Senate under special rules that make passage easier for Democrats, prospects for recurring checks and automatically extended unemployment benefits appear dim given opposition from Republicans and even some moderate Democrats.