The last government shutdown, which lasted 35 days, was estimated to have cost at least $11bn to the US economy. Photograph: Mariam Zuhaib/APSenior officials inside Donald Trump’s administration have acknowledged the federal government shutdown, without an end in sight, could hurt the US economy. The damage could be worth billions of dollars each week, according to analysts. “We could see a hit to the GDP, a hit to growth and a hit to working America.”Prolonged failure to reach a deal would be costly. The memo estimates a monthlong shutdown would reduce consumer spending in the US by $30bn.