They include hundreds of unaccompanied minors who are being held in immigration detention facilities.
Some critics accuse Biden of replacing Trump's unapologetically harsh measures with an approach of hiding the treatment of migrants by restricting media access. We are dealing with it, but it's going to take some time, and are we frustrate?
Announcing Ms Harris's appointment as his immigration czar, Mr Biden told reporters and officials at the White House: "She's the most qualified person to do it, to lead our efforts with Mexico and the Northern Triangle [Honduras, Guatemala and El Salvador], and the countries that are going to need help in stemming the movement of so many folks - stemming the migration to our southern border".
Biden's decision gives a high-profile assignment to his vice president, a former US senator from California, and gives her the same role he played as vice president for then-President Barack Obama.
Harris said the current situation was in part caused by the Trump-era dismantling of a system that allowed U.S. officials to process children's asylum requests in their home countries. In the first two months of Biden's administration, the situation at the border has intensified, reportedly, in part, because more migrants from Central America have the perception that Biden will be kinder to them - though it's also true that nothing has changed for many of their unsafe and impoverished living situations at home, from which some of them are seeking refuge or asylum.
"We're going to look at the possibility for people in their home countries in the Northern Triangle to have a predictable, regular process of seeking asylum there so they don't have to take this phenomenally unsafe journey or, worse yet, send their children unaccompanied", said one senior official who briefed reporters on the Harris move.
"Should we be processing these cases faster?" she asked.
Vice President Harris delivers brief remarks during a meeting Wednesday.
Ms Harris will likely rely on her experience as senator from California, a border state, to inform her diplomatic efforts.
Some of Biden's fellow Democrats have also called for action to stem the migrant flow.
If she succeeds, Harris defuses an issue that the Republican Party - and Donald Trump, in particular - has used as an effective political weapon against her party, earning the gratitude of influential immigration activists.
The vice president, until now, had not been tasked with a key portfolio issue distinct from Biden.
Vice President Kamala Harris acknowledged the situation.
On Monday, photographs emerged of a crowded migrant detention facility housing children along the southern border. They were sleeping on thin mattresses on the floor under foil blankets.
"Are we looking at overcrowding at the border, particularly these kids?"
The photos, said to have been taken last weekend, also raised concerns over how much social distancing was taking place at the centre.
The White House said it was committed to transparency and would work to let in more journalists on the ground.
She said earlier Wednesday in an interview with CBS News that the White House was frustrated by the current situation.
Harris said the job "will not be easy, but it is important work, it is work that we demand as a people of our country".
Those showers will push into the parts of the Valley later this morning bringing scattered showers for the Shoals through midday. The forecasted conditions for fire weather include strong gusting winds and low humidity across the region.
Berlin had also struck a deal with air carriers to ensure that all travellers returning to Germany would be tested, Merkel said. Europe's top economy will elect a new government in September, as Merkel is retiring after 16 years in power.
Wolf has said the state is making progress in the state's vaccine distribution but the supply remains well below the demand. Several provinces are redoubling COVID-19 vaccination efforts today, offering shots to broader swaths of the population.
The Miami-Dade Medical Examiner's Office said Monday it is conducting further tests, and no cause of death has been determined. At the time of writing, authorities are trying to figure out if the woman overdosed on a pill given to her by the suspects.
The incident happened as Biden headed to meet Asian-American community leaders after a major shooting at a parlour this week. President Trump is not the only member of the Trump family having fun at Biden's expense.
The new curfew of the city is set from eight in the evening until six in the morning, according to an Associated Press report. Ron DeSantis' pro-business stance, Florida has no statewide mask rules, limits on capacity or other such restrictions.
Democrats also are pressing ahead with other legislation that faces Republican opposition, including voting-rights legislation. Often times people can legitimately buy a firearm because there's nothing in their background that says that they shouldn't".
The Health Minister on Thursday approved a third vaccine, by the British Regulator, which should be available in the coming weeks. India has inched closer to touch the significant milestone of administering almost four crore 50 lakh COVID-19 Vaccine doses.
Avon and Somerset Police has said it will now be carrying out a "significant investigation to identify all those responsible". Bristol's mayor Marvin Rees said he had "major concerns" about the bill, but condemned the violence .
Meanwhile, a number of regions are moving to different restriction levels in the province's colour-coded pandemic framework. Ontario is reporting more than 1,500 new cases of COVID-19 today as virus-related hospitalizations surge in the province.
The degree of effectiveness against symptomatic Covid-19 was even higher than observed in the Oxford-led clinical trials. Defence Secretary Ben Wallace hit back by warning the manufacture of the Pfizer vaccine depends on supplies from the UK.
Officials are trying to build up capacity to care for some 14,000 migrants now in federal custody - and more likely on the way. Two months into the Biden presidency, an immediate crisis on the border has begun to test the new administration.
E.U. Set to Curb Covid Vaccine Exports for 6 Weeks
Brussels will push ahead with plans to block shipments of coronavirus vaccines to the United Kingdom and launch new rules targeting countries with high vaccination rates and low exports of jabs today.
Donald Trump reportedly starting own social media network
Miller added that Trump's been conducting "high-powered meetings" at Mar-a-Lago regarding the latest venture, CNN reported . The unnamed platform would "attract tens of millions" of new users and would "completely redefine the game", Miller said.
UK warns EU vaccine export ban would be 'counter-productive'
She called on other countries to reciprocate the EU's openness and said the bloc was inviting national leaders for discussion. The EU is "quite right" to consider preventing vaccines from being exported outside the bloc, according to a Fine Gael TD.