How Biden’s border plans went from hopeful to chaotic

FILE - Immigrants are processed by the U.S. Border Patrol after crossing the Rio Grande on May 22, 2021, in Roma, Texas. Biden took office on Jan. 20 and almost immediately, numbers of migrants exceeded expectations. (Joel Martinez/The Monitor via AP, File)

FILE - Migrants, many from Haiti, wade across the Rio Grande river from Del Rio, Texas, to return to Ciudad Acuña, Mexico, Sept. 20, 2021, to avoid deportation from the U.S. The Border Patrol encountered migrants in South Texas more often than ever in June and July, dashing expectations for a common summer slowdown. In September, about 15,000 mostly Haitian refugees were camped under a bridge in the small border town of Del Rio, Texas. (AP Photo/Felix Marquez, File)

FILE - Three young migrants hold hands as they run in the rain at an intake area after turning themselves in upon crossing the U.S.-Mexico border in Roma, Texas, May 11, 2021. Biden took office on Jan. 20 and almost immediately, numbers of migrants exceeded expectations. (AP Photo/Gregory Bull, File)

FILE - Migrants, most from Haiti, cross the Rio Grande towards Del Rio, Texas, from Ciudad Acuña, Mexico, Sept. 23, 2021. In September, about 15,000 mostly Haitian refugees were camped under a bridge in the small border town. (AP Photo/Felix Marquez, File)

FILE - A Haitian migrant uses the Rio Grande to take a bath after crossing a dam from Mexico to the United States, Sept. 17, 2021, in Del Rio, Texas. The Border Patrol encountered migrants in South Texas more often than ever in June and July, dashing expectations for a common summer slowdown. In September, about 15,000 mostly Haitian refugees were camped under a bridge in the small border town of Del Rio, Texas. (AP Photo/Eric Gay, File)

Children lie inside a pod at the main detention center for unaccompanied children in the Rio Grande Valley run by U.S. Customs and Border Protection (CBP), in Donna, Texas, March 30. Health and Human Services belatedly, aided by the Federal Emergency Management Agency, opened about a dozen emergency holding centers within about a month to process unaccompanied children. (AP Photo/Dario Lopez-Mills, Pool, File)

FILE - Supporters of immigration reform march while asking for a path to citizenship and an end to detentions and deportations, April 28, 2021, in Washington. Biden took office on Jan. 20 and almost immediately, numbers of migrants exceeded expectations. (AP Photo/Jacquelyn Martin, File)

FILE - Migrants, many from Haiti, are seen at an encampment along the Del Rio International Bridge near the Rio Grande, Sept. 21, 2021, in Del Rio, Texas. About 15,000 mostly Haitian refugees were camped under the bridge in the small border town. (AP Photo/Julio Cortez)

FILE - Mounted U.S. Border Patrol agents attempt to contain migrants as they cross the Rio Grande from Ciudad Acuña, Mexico, into Del Rio, Texas, Sept. 19, 2021. The administration began a massive expulsion of thousands of Haitians while allowing thousands of others to stay in the U.S. The uneven response, which at one point included Border Patrol agents on horseback appearing to use reins as whips to corral Haitian asylum seekers, sparked sharp criticism and underscored for many a failed border policy. (AP Photo/Felix Marquez, File)

FILE - A Border Patrol agent talks to migrants after they were detained and taken into custody, March 21, 2021, in Abram-Perezville, Texas. Biden took office on Jan. 20 and almost immediately, numbers of migrants exceeded expectations. (AP Photo/Julio Cortez, File)

A group of migrants mainly from Honduras and Nicaragua wait along a road after turning themselves in upon crossing the U.S.-Mexico border, in La Joya, Texas, May 17. Biden took office on Jan. 20 and almost immediately, numbers of migrants exceeded expectations. (AP Photo/Gregory Bull, File)

McALLEN, Texas — For about four months before President Joe Biden took office, advisers engaged in intense internal debate about how quickly they should undo his predecessor’s hardline border policies.