The shutdown has affected about a quarter of the government, left 800,000 federal workers furloughed or working without pay, and on Thursday entered its sixth day
Asked when the government would reopen fully, Trump said he couldn't say
The partial shutdown that officially kicked in on Friday midnight has dealt a blow to several national parks and landmarks forcing them to close their doors to visitors during the holiday season
Funding for government operations expired at midnight on Friday and lawmakers worked through the weekend in vain
At the core of Democrats' demands is the fate of young people, known as Dreamers, who were brought to the country illegally as children
The Republican-controlled Senate and House of Representatives held rare weekend sessions on Saturday, facing a political crisis that could affect November congressional elections
This, if lawmakers fail to clinch a deal to fund the government