Trust in many American institutions has been declining, but few institutions have fallen so far out of grace as Congress. Last year, I showed that the previous Congress was the least productive Congress in modern times, including the famous Do-Nothing Congress of 1947-48, passing just 238 laws, 37 percent of the average of the 32 Congresses that preceded it. In 2013, the first year of this Congress, the number of new laws passed fell further, to 55 (as of Nov. 30), seven fewer than during the same period in 2011. As a result, Congress now stands dead last in approval rating among key American institutions – below other braches of government, below news outlets, below banks and even below big business.

Congress well deserves that poll standing, in significant part because of the damage that it has done to the federal budget. The combination of Republican determination to cut spending and Democratic insistence that none of the entitlement programs (such as Medicare and Social Security) be meaningfully affected has resulted in the utterly inane policy of starving key domestic programs, including education, infrastructure and research and development. The recent budget fight and subsequent agreement did nothing to change that trajectory. As shown by the red line above, all that resulted was avoiding the worst two years of forced budget cuts to these programs; for the 10 years beginning in 2008, this important spending will rise slightly in nominal numbers but will fall by 5 percent, after adjusting for inflation.

The dysfunction in Washington has taken its toll in other important ways. Not only has business confidence been shaken, but each new political battle has also been terrifying for consumers. Back in the summer of 2011, when the United States had its AAA credit rating removed by S.&P. after it flirted with default, consumer confidence recorded the second biggest two-month drop ever, behind only the aftermath of Hurricane Katrina. A smaller decline occurred at the end of 2012 when Congress nearly went over a fiscal cliff. Beginning this past July, consumer confidence dropped to its lowest level in nearly two years as a result of the government shutdown, the A.C.A. problems and related battles. Now, a two-year budget nearly in hand, Americans’ moods seem to have improved. At a time when we need consumers to spend (prudently), these periods of faltering confidence have real economic consequences.

In contrast to the mood in most of the country and the still slow economy, Silicon Valley is partying again, albeit not quite like 1999. The Facebook initial public offering in May 2012 helped usher in a resurgence of excitement among investors for anything that looks like a sexy new high-tech service. This year’s poster child I.P.O. was Twitter, which set a new record of one kind among recent major technology I.P.O.'s: its valuation of more than 28 times its revenues. That didn’t daunt investors; the stock promptly more than doubled and now trades at 66 times revenues. (Of course, there are no profits.)