Barack Obama took to Time 100 to honor the outspoken survivors of the Parkland school shooting in February.

Well, most of the survivors.

Obama heaped praise upon five Marjory Stoneman Douglas high school students — Cameron Kasky, Jacyln Corin, David Hogg, Emma González and Alex Wind — in a short piece honoring the students' selection as some of Time's 100 Most Influential People of 2018.

All of those students have been outspoken gun control advocates. Obama did not note the efforts of more politically conservative survivors.

Sixteen-year-old Kyle Kashuv spent weeks in Washington, D.C. after the shooting lobbying lawmakers on school security legislation. Congress eventually passed the STOP School Violence Act, which funds mental health programs and safety infrastructure programs.

Some of Kashuv's classmates have criticized that measure, noting that it does not address guns.

This pathetic new act consistently mentions

“School violence” and

“Student violence”



Where’s any mention of GUN violence?



A mentally troubled individual murdered 17 people in my school with a GUN.



He used a GUN.



Stop avoiding the facts. #NeverAgain #MarchForOurLives. — Cameron Kasky (@cameron_kasky) March 12, 2018

Kyle Kashuv noted Obama's omission, calling it "a disgrace." (He later deleted the tweet, it appears.)

Kashuv said Obama missed the mark when he gave credit to the Parkland students for "persuading statehouses and some of the biggest gun retailers to change."

"@rpetty and @AndrewPollackFL…actually got the legislation passed," Kashuv tweeted, referring to two fathers of slain Stoneman Douglas students who lobbied lawmakers in Tallahassee and Washington, D.C.

It's an absolute shame that @BarackObama gives no credit to @rpetty and @AndrewPollackFL who actually got the legislation passed.



"Already, they’ve [the Parkland students] had some success persuading statehouses and some of the biggest gun retailers to change." — Kyle Kashuv (@KyleKashuv) April 19, 2018

But the other survivors thanked Obama for the words of support.

"An immense thank you to @BarackObama for the kind words," Kasky tweeted.

Thank you @TIME for this honor and an immense thank you to @BarackObama for the kind words. #NeverAgain https://t.co/E4W94ODhAl — Alex Wind (@al3xw1nd) April 19, 2018

Read Obama's entire tribute here.

Read more: Barack and Michelle Obama in letter to Parkland survivors: 'You've helped awaken the conscience of the nation'