The impact of the government shutdown hit travelers across the United States Monday, as air traffic controllers called out sick, closing a control tower and leading to delays at major airports.

Transportation Secretary Sean Duffy has warned that air traffic controllers are feeling increasing pressure at work amid the government shutdown for which Republicans and Democrats are both holding each other responsible.

The Senate again shot down dueling bills authored by Republicans and Democrats. There's still no surefire end in sight to the fiscal crisis, which has shuttered a swath of federal agencies and services across the country.

The stalemate over how to end the government shutdown is stretching into another week without a clear resolution in sight, as both parties trade blame for the funding lapse. Two dueling measures to fund the government and end the shutdown failed in the Senate for a fifth time Monday.

The government shutdown is barreling forward, with few signs of a resolution over the weekend. It’s normal for these shutdowns to feel intractable, right up until the moment one side suddenly caves. But the dynamics here are unusual and suggest this one could last longer than usual.

The federal government is currently shut down. NPR's network is following the ways the government shutdown is affecting services across the country.

Sen. Cory Booker (D-N.J.) said the festering U.S. government shutdown is a “tsunami of Donald Trump’s creation.” As the shutdown enters a new week with Congress still struggling to pass a bill to fund the government, Booker told ABC News’ “ This Week ” co-host Martha Raddatz that he’s not focused on lobbing the blame at either political party.

Senate again rejects competing funding bills from Democrats and Republicans as the shutdown is set to hit the one-week mark.

The U.S. government shutdown could raise a caution flag for private companies considering a move to the public market for investors.

President Donald Trump and the White House are considering not paying furloughed federal employees for time they didn’t work during the government shutdown.