The White House on Friday said it wouldn’t comment on the petition to deport Justin Bieber, which was filed in January and became the second-most popular petition on the president’s website.

In an unsigned answer, the White House said commenting could interfere with ongoing criminal investigations into Mr. Bieber’s behavior — and instead, the White House used the chance to pontificate on the need for immigration reform.

“Not only is it the right thing to do morally, it’s the right thing for our country: Independent economists say immigration reform will grow our economy and shrink our deficits by almost $1 trillion in the next 20 years. For those of you counting at home, that’s 12.5 billion concert tickets — or 100 billion copies of Mr. Bieber’s debut album,” the White House said.

The White House said Congress must streamline legal immigration and crack down on employers who hire illegal immigrants, but must offer illegal immigrants already here a path to citizenship.

Roger Skrzynski II, the Michigan man who created the petition to deport Mr. Bieber, said that sounded like the wrong solution to immigration.