WASHINGTON : The White House is proposing a roughly $850 billion economic rescue package Tuesday amid the coronavirus outbreak, a sweeping stimulus for businesses and taxpayers amid unseen since the Great Recession of 2008. Treasury Secretary Steven Mnuchin planned to outline the package to Senate Republicans at a private lunch, with officials aiming to have Congress approve it this week. Senate Majority Leader Mitch McConnell, opening the Senate on Tuesday morning, promised swift action. “The Senate will not adjourn until we have passed significant and bold new steps above and beyond what the House has passed to help our strong nation and our strong underlying economy weather this storm,” McConnell said. Bigger than the 2008 bank bailout or the 2009 recovery act, the White House proposal aims to provide relief for small businesses, $50 billion for the airline industry and include a massive tax cut for wage earners. The White House hopes the measure will pass quickly, possibly this week, an enormous political undertaking as the administration scrambled to contain the economic fallout of the severe disruptions to American life from the outbreak. White House officials offered senators a preliminary briefing late Monday at the Capitol, saying they want the plan approved by Congress as soon as possible, suggesting in a matter of days. “ASAP,” White House economic adviser Larry Kudlow said late Monday. “There’s an urgency.” The rush to inject cash and resources into the economy is an effort unlike any since the 2008 economic crisis, with political and economic interventions and eye-popping sums to try to protect Americans from the health and financial fallout. “We’ve got a lot of work to do from here,” Mnuchin told reporters late Monday. The new proposal is beyond the House ‘s estimated $100 billion aid package of sick pay, emergency food aid and free virus testing that was approved over the weekend and is pending before the Senate. Now Congress will be rushing to pass to two — a massive, sweeping response to the virus outbreak that is rewriting America’s way of life. Muscling the aid will test Congress and the White House at a pivotal moment in the crisis and in an election year when the two parties have vastly different outlooks on the best way to prop up the economy and help Americans. Senate Democrats have proposed their own $750 billion package — boosting hospital capacity and unemployment checks for the suddenly jobless — with deep negotiations to come. “We will need big, bold, urgent federal action to deal with this crisis,” Senate Democratic Leader Chuck Schumer said Monday in announcing Democrats’ plan. Schumer will meet with Senate Democrats on a conference call to outline their proposal. All sides — the House, Senate and White House — agree more federal resources are needed to handle what’s coming. At the start of the month, Congress approved $8.3 billion in initial aid. Trump quickly signed into law the measure, which provided federal agencies money for vaccines, tests and potential treatments, and funding to help state and local governments respond to the threat.