It’s a unique opportunity for an 11-year-old girl to get to see a bill from its start to watching President Donald Trump sign it into law. But in a way, that bill, the so-called STAR Act, is named for cancer survivor Sadie Keller.

Sadie has been an advocate for the measure by Rep. Michael McCaul for two years. It will step up efforts to identify childhood cancer incidences, improve the quality of life for survivors, and target opportunities to expand research on therapeutics.

It’s the third successful piece of legislation that Sadie has worked on with the Texas Republican.

“I always say Sadie’s my star because I got to know her about three years ago and that’s how long we’ve been working on the STAR Act. All the advocates and the children like Sadie who come up to the Hill to advocate for the bill and three years later — we finally got this done,” McCaul said.

Sadie was diagnosed with leukemia in 2015 when she was 7. Her cancer is now in remission. She first met McCaul in March 2016 when she was on Capitol Hill to lobby. Now, she’s visited the White House, too.