President Donald Trump is considering not giving back pay to all federal employees once the government shutdown ends, suggesting it could depend on the worker in the GOP’s latest attempt to force Democrats to concede in the ongoing funding battle.

As members of Congress have failed to reach an agreement to keep the federal government open, several notable D.C. attractions have been shuttered due to funding and staffing issues.

Because of the federal government shutdown, a program that provides breastfeeding support, nutritious foods and education has suspended services.

President Trump suggests back pay for federal workers isn't a given. A draft memo from the Office of Management and Budget released earlier in the day outlined the legal argument for denying back pay to furloughed federal workers. While labor unions and Democrats were quick to criticize the idea, the president appears open to it.

The federal government shutdown has entered its second week, and already shortages of air traffic controllers have strained operations and disrupted flights at some U.S. airports.