Comedian Amy Schumer got teary-eyed Monday as she joined her cousin Chuck and vowed to fight for tougher gun-control laws following the deadly shootings in a Louisiana movie theater that was playing her movie, “Trainwreck.”

She broke down at a packed press conference in Midtown with the senator, her second cousin once removed, as she described the two young women — 21-year-old Mayci Breaux and Jillian Johnson, 33 — killed during the movie on July 23.

“I’m not sure why this man chose my movie to end those two beautiful lives and injure nine others, but it was very personal for me,” the actress said, her voice wavering.

“Enough is enough. These shootings have got to stop. I don’t know how else to say it.”

After talking with her cousin, who hasn’t seen the romantic comedy, Amy Schumer turned that anger into action.

The duo announced a three-pronged plan that includes incentives for states to provide more information for the nationwide background check for gun applicants.

The Schumers also called on Congress to fully fund the Substance Abuse and Mental Health Services Administration, which is facing up to $150 million in federal cuts.

“Unless something is done, and done soon, dangerous people will continue to get their hands on guns,” Amy said.

“No one wants to live in a country where a felon, the mentally ill or other dangerous people can get their hands on guns with relative ease.”

The 59-year-old shooter, John Russell Houser, who had a history of mental illness, was known for his anti-Semitic beliefs and apparently targeted the film for its feminist themes. He killed himself amid his rampage.

Sen. Schumer said his cousin’s star power will get attention for the issue well beyond the political sphere.

“Having people like Amy speaking out reaches people who I could never reach,” he said at the press conference, which was attended by more than two dozen reporters.