People opposed to President Donald Trump's executive order barring entry to the U.S. by Muslims from certain countries demonstrate in Los Angeles. (AP Photo/Reed Saxon)
A protester holds a sign at San Francisco International Airport during a demonstration to denounce President Donald Trump's executive order. (AP Photo/Marcio Jose Sanchez)
Protesters are surrounded by police officers and travelers as they pass through an exit of Terminal 4 at John F. Kennedy International Airport in New York, Saturday, Jan. 28, 2017. (AP Photo/Craig Ruttle)
Protesters temporarily block an intersection near Terminal 4 at John F. Kennedy International Airport in New York, Saturday, Jan. 28, 2017. (AP Photo/Craig Ruttle)
Protesters assemble at John F. Kennedy International Airport in New York, Saturday, Jan. 28, 2017, after earlier in the day two Iraqi refugees were detained. (AP Photo/Craig Ruttle)
Protesters block an intersection near Terminal 4 at John F. Kennedy International Airport in New York, Saturday, Jan. 28, 2017. (AP Photo/Craig Ruttle)
Protesters are surrounded by police officers and travelers as they pass through an exit of Terminal 4 at John F. Kennedy International Airport in New York, Saturday, Jan. 28, 2017. (AP Photo/Craig Ruttle)
A protester stands facing police officers at an entrance of Terminal 4 at John F. Kennedy International Airport in New York, Saturday, Jan. 28, 2017. (AP Photo/Craig Ruttle)
A little boy is seen with his parents as people opposed to President Donald Trump's executive orders barring entry to the U.S. of seven predominantly Muslim countries demonstrate. (AP Photo/Craig Ruttle)
A protester raises her fist and shouts as she joins others assembled at John F. Kennedy International Airport in New York, Saturday, Jan. 28, 2017. (AP Photo/Craig Ruttle)
Person holds a sign near an passenger exit point inside Terminal 4 at John F. Kennedy International Airport in New York, Saturday, Jan. 28, 2017. (AP Photo/Craig Ruttle)
Protesters assemble at John F. Kennedy International Airport, Saturday, Jan. 28, 2017 after earlier in the day two Iraqi refugees were detained while trying to enter the country. (AP Photo/Craig Ruttle)
Protesters assemble at John F. Kennedy International Airport in New York Jan. 28, 2017 after earlier in the day two Iraqi refugees were detained while trying to enter the country. (AP Photo/Craig Ruttle)
Protesters assemble at John F. Kennedy International Airport in New York after earlier in the day two Iraqi refugees were detained while trying to enter the country. (AP Photo/Craig Ruttle)
Protesters assemble at John F. Kennedy International Airport in New York, Saturday, Jan. 28, 2017 after two Iraqi refugees were detained while trying to enter the country. (AP Photo/Craig Ruttle)
Protesters assemble at John F. Kennedy International Airport in New York, Saturday, Jan. 28, 2017 after two Iraqi refugees were detained while trying to enter the country. (AP Photo/Craig Ruttle)
People with luggage walk past protesters assembled at John F. Kennedy International Airport in New York, Saturday, Jan. 28, 2017. (AP Photo/Craig Ruttle)
A protester raises her fist and shouts as she joins others assembled at John F. Kennedy International Airport in New York, Saturday, Jan. 28, 2017. (AP Photo/Craig Ruttle)
Protesters assemble at John F. Kennedy International Airport in New York, Saturday, Jan. 28, 2017 after two Iraqi refugees were detained while trying to enter the country. (AP Photo/Craig Ruttle)
Protesters assemble at John F. Kennedy International Airport in New York, Saturday, Jan. 28, 2017 after two Iraqi refugees were detained while trying to enter the country. (AP Photo/Craig Ruttle)
Protesters assemble at John F. Kennedy International Airport in New York, Saturday, Jan. 28, 2017 after two Iraqi refugees were detained while trying to enter the country. (AP Photo/Craig Ruttle)
Protesters assemble at John F. Kennedy International Airport in New York, Saturday, Jan. 28, 2017 after two Iraqi refugees were detained while trying to enter the country. (AP Photo/Craig Ruttle)
Protesters assemble at John F. Kennedy International Airport in New York, Saturday, Jan. 28, 2017 after two Iraqi refugees were detained while trying to enter the country. (AP Photo/Craig Ruttle)
Protesters assemble at John F. Kennedy International Airport in New York, Saturday, Jan. 28, 2017 after two Iraqi refugees were detained while trying to enter the country. (AP Photo/Craig Ruttle)
Protesters assemble at John F. Kennedy International Airport in New York, Saturday, Jan. 28, 2017 after two Iraqi refugees were detained while trying to enter the country. (AP Photo/Craig Ruttle)
Protesters assemble at John F. Kennedy International Airport in New York, Saturday, Jan. 28, 2017 after two Iraqi refugees were detained while trying to enter the country. (AP Photo/Craig Ruttle)
Protesters assemble at John F. Kennedy International Airport in New York, Saturday, Jan. 28, 2017 after two Iraqi refugees were detained while trying to enter the country. (AP Photo/Craig Ruttle)
Protesters assemble at John F. Kennedy International Airport in New York, Saturday, Jan. 28, 2017 after two Iraqi refugees were detained while trying to enter the country. (AP Photo/Craig Ruttle)
Protesters assemble at John F. Kennedy International Airport in New York, Saturday, Jan. 28, 2017 after two Iraqi refugees were detained while trying to enter the country. (AP Photo/Craig Ruttle)