Freedom lost a strong defender, and I lost a friend.

For over 30 years, Sen. Lindsey Graham was at the center of big debates about US security. He knew peace comes from strength, not wishes. He understood dictators are stopped by strong resolve, not by giving in.

History will remember his accomplishments. The Senate has taken a step to secure one more by advancing his legislation. Now, the House must act quickly.

The Senate is moving to stop Putin's war with sanctions on Russia and Iran.

Congress can make sure one of Lindsey Graham's greatest achievements happens.

The Lindsey O. Graham Sanctioning Russia and Iran Act is more than a sanctions bill. It's the result of Lindsey's effort to stop Putin's war against Ukraine. Passing it would honor his memory and advance the cause he cared about.

Lindsey Graham knew half-measures wouldn't change Putin's plans.

Over four years after Russia started its war, Putin still funds it through energy exports and financial networks. Existing sanctions have had an impact, but not enough. Putin has adapted, using a 'shadow fleet' of ships and foreign companies to sustain his defense.

Lindsey understood that half-measures wouldn't change Putin's plans.

A report warns Russia is using its 'shadow fleet' to test NATO's defenses.

Lindsey's legislation would impose sanctions on Russia's leaders, financial institutions, and energy companies. It would target the 'shadow fleet' and tighten financial controls.

This legislation is about restoring the deterrence that keeps dictators from mistaking US restraint for weakness.

History shows that unchecked aggression leads to more aggression. Every dollar that helps Russia evade sanctions finances missiles and drones that terrorize Ukrainian cities.

Ukrainian President Zelenskyy says Putin has lost the initiative as Ukraine's tech industry changes the war.

Lindsey Graham believed America should lead and stand with its allies. He knew the US must show it has the will and means to defend freedom.

One of Lindsey's last acts was to visit Kyiv and meet with President Zelenskyy. He believed this legislation could help bring Putin to the negotiating table and end the war.

Congress can pay tribute to Lindsey with speeches and memorials, but the best tribute would be to finish his work.

It's time for Congress to pass the Lindsey O. Graham Sanctioning Russia and Iran Act. Let's complete his final mission.

To read more, download the Fox News app.

To finish Lindsey Graham's work, Congress must pass the sanctions act.

To read more from Mike Pence, click here.

Mike Pence is the former US Vice President and founder of Advancing American Freedom.