WASHINGTON — The nation’s political leaders agreed on Sunday to spend and invest less money in the American economy, a step that economists said risks the reversal of a faltering recovery, in the hope of improving the nation’s long-term prosperity.

The emerging outlines of a deal to cut spending by at least $2.4 trillion over 10 years, with a multibillion-dollar down payment later this year, would complete an about-face in the federal government’s role from outsize spending in the immediate aftermath of the recession to outsize cuts in the future.  Read more