The dollar initially weathered the U.S. government shutdown. However, with the FAA now actively canceling flights, the negative GDP impact is becoming more tangible and less likely to be recovered quickly, increasing downside risk for the currency.

To prevent political stalemates from causing prolonged government shutdowns, a mechanism could automatically reopen government after a set period. This 'dead hand switch' would trigger pre-agreed, across-the-board budget cuts, forcing politicians to negotiate in good faith to avoid an automated outcome that neither side fully controls.

Political gridlock is portrayed as an intentional strategy. By creating a temporary economic downturn via a shutdown, the administration creates fiscal and monetary space to inject massive stimulus leading into midterm elections, timing the recovery for political gain.

Shutdowns pause the release of potentially bearish economic data and pressure the Fed to be more cautious, supporting liquidity. Markets now discount these events, seeing them as temporary political theater with a predictable resolution, unlike in the past when they caused fear and hedging.

Investors should watch for the first missed paycheck for furloughed federal workers as a leading indicator. This event creates an immediate 2-4% drop in spending among affected workers, a tangible sign that the shutdown's economic impact is spreading beyond Washington D.C. and beginning to affect the broader economy.

Political deadlines like military pay dates are often overcome. The true forcing mechanism for ending a prolonged government shutdown is the breakdown of essential services that cause widespread public pain, such as air traffic control disruptions or the cessation of welfare benefits like WIC and SNAP.

The direct GDP impact from furloughed federal workers is small, mechanical, and quickly reversed. The more significant and lasting economic damage from a prolonged shutdown stems from its effect on the private sector, such as backlogged IPOs at the SEC or delayed construction projects waiting on permits.

The economic cost of a government shutdown is not gradual. It is negligible for the first two weeks, becomes tangible at three to four weeks as paychecks are missed, and grows exponentially after a month as critical government services and benefits begin to break down, causing widespread disruption.

The forcing mechanism to end a prolonged government shutdown isn't a calendar date but rather the breakdown of a critical, highly visible public service. The 2018-19 shutdown ended when air traffic control snarled, creating massive public pressure that politicians could no longer ignore.