Madam President, on Sunday, February 24, thousands of people marched in Moscow and in cities across Russia to remember Boris Nemtsov, a Russian statesman and friend of freedom who was gunned down in sight of the Kremlin walls 4 years ago.

These people were honoring a Russian patriot who stood for a better future–a man who, after leaving the pinnacle of government, chose a courageous path of service to his country and his fellow Russians. Boris Nemtsov was a man who walked the walk. When others were silent out of fear or complicity, he stood up for a future in which the Russian people need not risk jail or worse for simply wanting a say in how their country is run.

Sadly, since Mr. Nemtsov’s assassination, the risks of standing up for what is right have grown in Russia. With every passing month, ordinary citizens there become political prisoners for doing what we take for granted here in the United States–associating with a political cause or worshipping God according to the dictates of one’s conscience.

Last month alone, in a high-profile case, a mother was jailed for the crime of being a political activist in Russia. She was kept from caring for her critically ill daughter until just hours before her daughter died. Jehovah’s Witnesses have been sentenced to years behind bars for practicing their faith. Also, a leader of a small anti-corruption organization was beaten to death with metal rods on the outskirts of Moscow. This was all just in February, and it is not even a comprehensive account of the Russian state’s using its powers not against real enemies but against its own people–peaceful citizens doing what peaceful citizens do.

As for the Nemtsov assassination, 4 years later, justice has yet to be served. It appears that President Putin and his cronies have little interest in uncovering and punishing the masterminds behind Russia’s highest profile killing in recent memory. While a few perpetrators who had been linked to the Kremlin-appointed leader of Chechnya, Ramzan Kadyrov, were convicted and sent to prison, Mr. Nemtsov’s family, friends, and legal team believe the organizers of his murder remain unidentified and at large.

I understand that Russia’s top investigative official has prevented his subordinates from indicting a close Kadyrov associate, Major Ruslan Geremeyev, as an organizer in the assassination, and the information linking Geremeyev to Mr. Nemtsov’s murder was credible enough for a NATO ally to place Geremeyev on its sanctions list. Yet there has still been no indictment. Russian security services continue to forbid the release of footage from cameras at the site of the assassination. Russian legal authorities refuse to classify the assassination of a prominent opposition leader and former First Deputy Prime Minister as a political crime. Despite all of this, they have declared the case solved.

Given this pattern of deliberate inaction on the part of Russian authorities, the need for some accountability outside of Russia has grown more urgent. Russia and the United States are participating States in the Organization for Security and Cooperation in Europe, or the OSCE, and have agreed that matters of justice and human rights are of enough importance to be of legitimate interest to other member states. Respect for these principles inside a country is often a predictor of the country’s external behavior. So countries such as ours have a reason to be involved.

At the recent meeting of the OSCE’s Parliamentary Assembly, we began a formal inquiry into Mr. Nemtsov’s unsolved murder and have appointed a rapporteur to review and report on the circumstances of the Nemtsov assassination as well as on the progress of the Russian investigation. As the chair of the U.S. delegation to the OSCE Parliamentary Assembly, I supported this process from its conception at an event I cohosted last July in Berlin.

Yet, as the United States of America, there is more we can do. To that end, I am glad to cosponsor a resolution with my Senate colleagues that calls on our own government to report back to Congress on what we know of the circumstances around Boris Nemtsov’s murder. This resolution also calls on the Treasury Department to use tools like the Magnitsky Act to sanction individuals who have been linked to this brutal murder, such as Ruslan Geremeyev.

We hear constantly from Russian opposition figures and civic activists that personal sanctions, such as those imposed by the Magnitsky Act, have a deterrent effect. Vladimir Putin has made it abundantly clear that these sanctions, based on personal accountability, are more of a threat to his regime than blunter tools, such as sectoral sanctions, that often feed his propaganda and end up harming the same people we are trying to help in Russia—innocent citizens. To its credit, the Trump administration has done a better job than had the previous administration in its implementing of the new mandates and powers Congress authorized in both the Russia and Global Magnitsky Acts. We are in a much different place than we were when these tools were originally envisaged nearly 10 years ago.

The administration is mandated to update the Magnitsky Act’s list annually, with there being a deadline in December that sometimes slips into January. Now it is already March, and we have yet to see any new designations under the law that the late Mr. Nemtsov himself called the most pro-Russian law ever adopted in a foreign legislature. While the law has been lauded by Russian democrats, it is rightly despised by those like Vladimir Putin who abuse and steal from the American people.

Recall that it was at the Helsinki summit late last summer between the leaders of Russia and the United States of America—perhaps the grandest stage in U.S.-Russian relations in a decade—where Mr. Putin himself requested that his investigators be able to depose U.S. officials most closely associated with passing and implementing the Magnitsky law, as if they were criminals.

We need to show the Russian dictator that this sort of bullying will not stand and that we will continue to implement the Magnitsky Act thoroughly and fairly.

A year ago, I participated—along with many of my colleagues in the House and Senate—in the unveiling of Boris Nemtsov Plaza in front of the Russian Embassy here in Washington, DC—the first official memorial to Boris Nemtsov anywhere in the world.

One day, I hope there will be memorials to Boris Nemtsov all across Russia, but the best tribute to his memory will be a Russia he wanted to see, a just and prosperous Russia, at peace with its neighbors and a partner with the United States.

I yield the floor.