Will Congress toughen gun laws?

Agunman on Wednesday opened fire in a crowded California country-music bar. He shot a security guard first and killed at least 12 people, including a deputy sheriff who responded to the attack. More than 20 were wounded.

The carnage came just 11 days after the fatal shooting of 11 worshippers at a synagogue in Pittsburgh, nine months after 17 people were gunned down at a high school in Parkland, Florida, one year after 26 were killed in a shooting spree at a church in Sutherland, Texas, and 13 months after the massacre in Las Vegas.

Americans are watching — and now some are even experiencing — versions of this same horror over and over, hoping that eventually someone will figure out how to break the cycle.

If House Democratic leader Nancy Pelosi and President Donald Trump are sincere about coming together to fix problems the public cares about, there seems hardly a more pressing place to start than reducing gun violence.

Pelosi had already planned an early push to tighten background checks for gun purchases.

Trump has been erratic on the subject of gun safety.

In February, post-Parkland, he called for raising the minimum age for purchasing rifles and seemed open to a Democratic plan to ban assault weapons.

Trump is the ideal president to tackle the issue. What could be more disruptive than pressuring lawmakers to grow a spine and attack gun violence?

As legacies go, Trump and Pelosi could do far worse.