Senate Democrats’ decision to let a key surveillance authority lapse comes as they are increasingly emboldened in their legislative fights against President Donald Trump, blocking even traditionally bipartisan bills as they push back against his policies and personnel.

The posture is an escalation from a year ago, when Senate Democratic Leader Chuck Schumer was widely criticized within his party for a spring vote with Republicans to keep the government open. Since then, Democrats have forced government shutdowns, slowed Trump’s nominations and now blocked the bipartisan intelligence law as they seek leverage in a Republican-led Congress.

The risky strategy has consequences when government programs go dark, and Democrats have little to show for it so far in terms of policy victories. Republicans say it is a grave threat to national security to let the surveillance law, which aims to prevent terrorist attacks, expire just as millions of people are entering the United States for World Cup games and as celebrations for the nation’s 250th anniversary get underway.

But the hardball approach has helped unite Democrats inside and outside of the Capitol as they say they have no other choice — and that the blame should fall on Trump for how he is governing.