He accused Democrats of demanding increases in domestic programmes as the price for approving extra money for the Pentagon and complained about the length and complexity of the legislation, Xinhua reported.
The $1.3 trillion spending bill was approved by the House of Representatives on Thursday and by the Senate early Friday morning. It helps to avert a government shutdown as the current funding expires midnight.
The spending package allows big spending increases for defence and domestic programs, while adding money for infrastructure projects, veterans and measures to combat the opioid crisis, among other programmes.
It also includes measures meant to strengthen gun sale background checks and improve school safety.
But the bill also provides $1.6 billion -- far short of what the Trump administration has sought -- for border security measures, including construction of a border wall with Mexico.
"I say to Congress, I will never sign another bill like this again. I'm not going to do it again," Trump said at the press conference.
Trump has been frustrated that Congress has not provided enough funding to build a wall along the US-Mexico border, one of Trump's campaign promises.
In a tweet earlier on Friday, Trump threatened that he was considering to veto the massive spending bill which will fund the federal government through September 30.
He argued that 800,000 recipients of the Deferred Action for Childhood Arrivals (DACA) programme "have been totally abandoned by Democrats" and his long-promised border wall "is not fully funded."
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)
Business Standard has always strived hard to provide up-to-date information and commentary on developments that are of interest to you and have wider political and economic implications for the country and the world. Your encouragement and constant feedback on how to improve our offering have only made our resolve and commitment to these ideals stronger. Even during these difficult times arising out of Covid-19, we continue to remain committed to keeping you informed and updated with credible news, authoritative views and incisive commentary on topical issues of relevance.
We, however, have a request.
As we battle the economic impact of the pandemic, we need your support even more, so that we can continue to offer you more quality content. Our subscription model has seen an encouraging response from many of you, who have subscribed to our online content. More subscription to our online content can only help us achieve the goals of offering you even better and more relevant content. We believe in free, fair and credible journalism. Your support through more subscriptions can help us practise the journalism to which we are committed.
Support quality journalism and subscribe to Business Standard.