America is in the middle of a major decline in gun violence. Firearm homicides have fallen almost 30 percent since their peak five years ago. Baltimore’s homicide rate has plummeted to a 50-year low. This progress is not by accident; it is the product of years of investing in effective policy solutions.

But the Trump administration's latest all-out attack on federal firearms regulations threatens to unravel all this progress and increase gun violence nationwide.

One outcome from this attack—a fury of over 30 proposed regulatory changes in total—would dismantle the safeguards governing how guns are bought and sold—substituting a barely regulated online gun marketplace, or so-called “Amazon for Guns,” that would end background checks as we know them and deliver firearms straight to your doorstep. Other measures loosen regulations of highly lethal firearms, including machine guns, and let sellers destroy sales records, making it harder for law enforcement to solve crime and putting lives at risk.

What’s worse: the ATF in one of its proposed rules even notes that law enforcement lives may be put at risk if the rule is adopted. I’m not exaggerating: one measure says it could “hinder” law enforcement’s efforts to stop violent offenders, and another explicitly warns that the consequences could include “mass casualty events.”

These are not technical changes to the law being contemplated. This is an attempt, in a “flood the zone” torrent of proposed regulations, to dismantle and rewrite, rule by rule, the infrastructure that we, the people, built over decades to keep firearms out of the wrong hands. They are systems that work every day to prevent mass shootings, suicides, and gun trafficking, saving millions of lives.

As a parent, I refuse to accept the fact that our government is making our children and families less safe. As a lawyer, I know exactly how much damage and confusion deregulation can cause. And as an advocate who has for years fought alongside grieving parents, I'm not willing to watch our progress come undone.

It's no coincidence that Donald Trump Jr.'s new online firearms retailer GrabAGun—itself marketed as the “Amazon of guns”—is positioned to make millions from the changes. It keeps me awake at night that, if the Trump administration has its way, guns will be bought and delivered like groceries—pistols like paper towels, shotguns like cereal. But firearms shouldn’t be a quick purchase left waiting on your front porch.

Currently, when someone purchases a gun online, it still has to be shipped to a licensed dealer. There, the potential buyer must pass an in-person background check before they can complete the purchase. That in-person moment matters more than you may realize. Gun dealers are empowered to be gatekeepers, ensuring that each sale is safe by recognizing warning signs of dangerous transactions, including mental distress, suspicious third-party purchases, and risks of harm to self or others. But the measures offered up by the Trump administration do away with in-person background checks. Instead, this crucial safeguard would be replaced by a computer screen that is dangerously susceptible to fraud and deepfakes. It's like replacing airport security with an online questionnaire. That’s why even gun retailers oppose this rule, noting that online verification can’t replicate strong safety measures.

Make no mistake, the Trump administration’s proposed changes are a dire threat to all Americans. If they become finalized, guns will be more likely than ever to end up in the hands of dangerous purchasers, including gun traffickers, domestic abusers, and children. One proposed rule even explicitly warns that implementation could result in “mass casualty events.” In a country that already loses 40,000 people to gun violence every year and where guns are the leading cause of death of children, these are costs we cannot afford.

The silver lining is that, for now, these rule changes are only proposals. We still have time to ensure that these dangerous measures do not move forward. Our country’s historic progress to reduce gun crime and homicides hangs in the balance, but we cannot lose hope, and we cannot relent. The future of our gun safety laws—and the lives they protect—will be decided by what we do next. So let's get to work.

Kris Brown is the president of Brady—the oldest gun violence prevention organization in the country.

The views expressed in this article are the writer's own.