Conservative leadership candidate Kellie Leitch says if she becomes prime minister, “sanctuary cities” that help migrants and refugees stay in Canada will not be eligible for transit and other federal funding.

The cities of Toronto, Hamilton, London, Ont., and most recently Montreal have designated themselves sanctuary cities. That means undocumented refugees in those cities are granted full access to local services, regardless of their immigration status. Montreal became the fourth sanctuary city in February, after the number of refugees travelling across the U.S. and into Canada increased significantly in the wake of U.S. President Donald Trump’s anti-Muslim travel ban.

Other cities in Canada are considering sanctuary status.

Leitch tweeted last night: “One law for all is Canadian value. ‘Sanctuary cities’ will be ineligible for transit funding if I am PM.” On Facebook, she wrote a similar message, adding that these cities may not be eligible for “other federal funding,” too.

One law for all is a Canadian value. “Sanctuary cities” will be ineligible for transit funding if I am PM. #cpcldr — Kellie Leitch (@KellieLeitch) March 9, 2017

Leitch also sent a fundraising email to supporters on the topic.

“We read regularly in the news now of people crossing our border illegally in an attempt to flout our immigration laws,” it reads. “This is unacceptable.”

She said Canadians are generous, but that generosity “cannot be taken advantage of.” She argued towns like Emerson, Manitoba are being “swamped by illegal migrants” and that it’s unfair to “hard-working” Canadians and those who follow the legal process for coming to Canada.

“Some Canadian municipal politicians have talked about aiding these illegal migrants by refusing to enforce our immigration laws – by declaring themselves so called ‘sanctuary cities’. This is unacceptable.”

Leitch said that as prime minister she would require all municipalities to enforce immigration laws. “Any municipality that refuses to do so will no longer be eligible for transit or other federal funding so long as they insist on aiding illegal migrants staying in our country illegally.”

Leitch’s tweet was immediately met by backlash, and by a string of users who told her they joined the party specifically to vote against her.

@BetaPositiveSA @KellieLeitch The CPC needs a Centeralist at the helm not a right wing extremist — A Concerned Citizen (@forajustcanada) March 10, 2017

Dear @KellieLeitch – what happened to turn you into this caricature? What traumatic event has affected you so badly? #CPCLdr #CPC #cdnpoli — Reema Faris (@rmfaris) March 10, 2017

.@KellieLeitch You’d punish low-income, elderly & disabled transit riders for the decisions of politicians? You’d be a horrible PM! #AbLeg — Dave Beninger (@DaveBeninger) March 10, 2017

@KellieLeitch Why are you trying so hard to be the worst type of American, instead of the best type of Canadian? — CunningPike (@cunningpike) March 10, 2017

If I’m the Mayor of a Canadian sanctuary city, I respond to Kellie Leitch with: “ya, I’m not really worried you’re gonna be PM one day” — Rob Silver (@RobSilver) March 10, 2017