On Friday, President Donald Trump signed an executive order that blocks citizens from Muslim-majority nations including Iran, Iraq, Syria, Yemen, Sudan and Libya from entering the U.S. for 90 days, as well as indefinitely suspending admission of Syrian refugees into America.

The response worldwide has been one of outrage and disbelief, with chaos erupting in airports throughout the world as pre-approved refugees, students and workers holding visas and residency green cards were barred from flights into the U.S, according to reports emerging from Amsterdam, Frankfurt and Cairo, and other cities across Europe, the Middle East and Africa, reports The Guardian.

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Canadian Prime Minister Justin Trudeau has responded to the Muslim ban via Twitter, welcoming anyone “fleeing persecution, terror & war” to Canada, writing: “Canadians will welcome you, regardless of your faith. Diversity is our strength.”

So far, Trudeau’s tweet has been retweeted more than 145,000 times, and received more than 220,000 likes.

Also weighing in on the ban is actor Kal Penn, currently starring in Kiefer Sutherland’s “Designated Survivor” after previously serving as Associate Director of Public Engagement for the Obama administration.

Penn, however, is taking things a step further by creating a crowdfunding initiative titled “Donating to Syrian Refugees in the Name of the Dude Who Said I Don’t Belong in America.”

“To the dude who said I don’t belong in America, I started a fundraising page for Syrian Refugees in your name,” Penn writes on the page.

Adds Penn: “We are better than the hateful people who tell us we don’t belong in our own country, that America can’t be a beacon of freedom and hope for refugees from around the world. We will turn their bigotry, along with the President’s, into love.”

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Penn initially set a relatively low fundraising goal of $2,500, but upped it when that goal was reached within 11 minutes. Within the first two hours, the crowdfunding effort had raised $15,000. “$15,000! You are amazing,” he tweeted about the milestone.

Penn ultimately upped the goal to $50,000, and more than $43,000 has already been raised at the time of writing.

Penn has been chronicling the progress of fundraising via Twitter: