It's something they're required by law to do – periodically review and update the government's budget and track the changes.
The last government budget update was released in February. And according to the February budget, the government's deficit for this fiscal year was going to be a whopping $873 billion.
Now they're projecting to close this fiscal year (which ends on September 30th) with a deficit of $890 billion… which means they're over-budget by just under 2%.
2% is actually pretty good. But here's the problem: when they first unveiled the FY2018 budget in March of last year, they projected the annual deficit to be 'only' $440 billion.
So between their initial projections in March 2017, and their current projections in July 2018, this year's budget deficit increased by more than 100%.