Shumita Basu

This time around, Trump says he instructed the State Department to review the order before announcing it, unlike last time where top officials in the administration said they were largely left in the dark before Trump announced his plan. James Sample, a professor of constitutional law at Hofstra University, told ABC that he expects this order to be challenged.

The order drew immediate criticism from House Democrats, with Congresswoman Pramila Jayapal saying it would only further isolate the U.S. on the world stage. The president of a nonprofit that helps to resettle Afghans in the United States told The Washington Post thousands of Afghans with pending cases will now be blocked from reaching safety.

The order drew immediate criticism from House Democrats, with Congresswoman Pramila Jayapal saying it would only further isolate the U.S. on the world stage. The president of a nonprofit that helps to resettle Afghans in the United States told The Washington Post thousands of Afghans with pending cases will now be blocked from reaching safety.

The order drew immediate criticism from House Democrats, with Congresswoman Pramila Jayapal saying it would only further isolate the U.S. on the world stage. The president of a nonprofit that helps to resettle Afghans in the United States told The Washington Post thousands of Afghans with pending cases will now be blocked from reaching safety.

He told the Post that he believes people should, quote, call it what it is, a second Muslim ban, dressed up in bureaucracy and rushed out in the aftermath of a tragedy to disguise its intent. The effects of this announcement are still coming to light, and we'll learn more in the coming days. According to the language of the executive order, it's set to go into effect starting Monday.

He told the Post that he believes people should, quote, call it what it is, a second Muslim ban, dressed up in bureaucracy and rushed out in the aftermath of a tragedy to disguise its intent. The effects of this announcement are still coming to light, and we'll learn more in the coming days. According to the language of the executive order, it's set to go into effect starting Monday.

He told the Post that he believes people should, quote, call it what it is, a second Muslim ban, dressed up in bureaucracy and rushed out in the aftermath of a tragedy to disguise its intent. The effects of this announcement are still coming to light, and we'll learn more in the coming days. According to the language of the executive order, it's set to go into effect starting Monday.

Let's turn now to the ripple effects of the ongoing Canadian wildfires and the dangerous air quality many states are seeing. Hundreds of fires are still raging, and nearly half of those remain what's defined as out of control. That smoke has drifted into the U.S. and hit large swaths of the Midwest, creating a hazy fog and dangerous conditions for residents.

Let's turn now to the ripple effects of the ongoing Canadian wildfires and the dangerous air quality many states are seeing. Hundreds of fires are still raging, and nearly half of those remain what's defined as out of control. That smoke has drifted into the U.S. and hit large swaths of the Midwest, creating a hazy fog and dangerous conditions for residents.

Let's turn now to the ripple effects of the ongoing Canadian wildfires and the dangerous air quality many states are seeing. Hundreds of fires are still raging, and nearly half of those remain what's defined as out of control. That smoke has drifted into the U.S. and hit large swaths of the Midwest, creating a hazy fog and dangerous conditions for residents.

People living in parts of Minnesota, Nebraska, Wisconsin, Illinois, and Michigan have been badly affected. Here's how Fox 9's meteorologist Ian Leonard described conditions in Minnesota on Tuesday.

People living in parts of Minnesota, Nebraska, Wisconsin, Illinois, and Michigan have been badly affected. Here's how Fox 9's meteorologist Ian Leonard described conditions in Minnesota on Tuesday.

People living in parts of Minnesota, Nebraska, Wisconsin, Illinois, and Michigan have been badly affected. Here's how Fox 9's meteorologist Ian Leonard described conditions in Minnesota on Tuesday.

Minneapolis was flagged as very unhealthy, and on Tuesday, The Washington Post reports that it had at one point the second most unhealthy air quality of any major city in the world, behind only Kuwait City.

Minneapolis was flagged as very unhealthy, and on Tuesday, The Washington Post reports that it had at one point the second most unhealthy air quality of any major city in the world, behind only Kuwait City.

Minneapolis was flagged as very unhealthy, and on Tuesday, The Washington Post reports that it had at one point the second most unhealthy air quality of any major city in the world, behind only Kuwait City.

Conditions have now improved in some areas, but the smoke is drifting east, and vulnerable groups in five states — New York, New Jersey, Iowa, New Hampshire, and Maine — have been advised to stay indoors. Chicago skyscrapers are expected to be drowned in smoke over the weekend, with an alert now in place.

Conditions have now improved in some areas, but the smoke is drifting east, and vulnerable groups in five states — New York, New Jersey, Iowa, New Hampshire, and Maine — have been advised to stay indoors. Chicago skyscrapers are expected to be drowned in smoke over the weekend, with an alert now in place.

Conditions have now improved in some areas, but the smoke is drifting east, and vulnerable groups in five states — New York, New Jersey, Iowa, New Hampshire, and Maine — have been advised to stay indoors. Chicago skyscrapers are expected to be drowned in smoke over the weekend, with an alert now in place.

Now, of course, there'll be a lot of variation, so you should check out conditions in your area before canceling your park run. The Air Quality Index runs from 0 to 500, and beyond 100 is where you'll get possible alerts and warnings. PBS spoke with meteorologist Matthew Capucci about the dangers and how you can lower your risk.