This comes after Mattis's testimony to the Senate Armed Services Committee earlier on Tuesday in which he pressed for troop increases to combat a "surging" Taliban.
"We would have to change the priorities, we would have to put it in a more regional construct".
"To just say to Jim Mattis, 'Do whatever you think is best, ' and for Secretary Mattis to be able to add 30,000 troops, for example, without having to get the president to approve that, strikes me as unhealthy", Christine Wormuth, an Obama-era Pentagon policy official, said to the AP, "It certainly could be interpreted as the president kind of distancing himself from these profound decisions and specifically from what we're doing in Afghanistan".
The U.S. military has proposed sending an additional 2,000 to 4,000 American troops to Afghanistan.
Earlier this week President Trump also delegated to Mattis the authority for troop levels in Afghanistan.
McCain, one of the Senate's most outspoken interventionists on foreign policy, expressed noticeable frustration with what he perceives as a failed USA military strategy in Afghanistan, telling Mattis during the hearing, "We're now six months into this administration". "Not winning" means we're losing, yet how likely is it that the U.S. military, effectively under the command of retired General Mattis, is going to shift gears completely and withdraw?
As I have previously written: "Gen. John W. Nicholson Jr., commander of the worldwide military force in Afghanistan, noted in early February that the government is in control of only about two-thirds of the population". Furthermore, we should question why we still have troops there nearly 16 years later.
Authorities say escaped Georgia inmates caught in Tennessee
DuBose was imprisoned after being found guilty of armed robbery, aggravated assault, credit card fraud and theft by taking. The Madison County Sheriff's Office said they have received numerous tips, but no credible sightings of Rowe and Dubose.
E3 2017: Miyamoto, Ubisoft reveal Mario in XCOM clone
Mario + Rabbids: Kingdom Battle was hosted not long after the Nintendo Spotlight: E3 2017 pre-recorded presentation took place. It also combines all that the fans love about Mario's iconic universe with the side-splitting antics of the Rabbids .
Interior head suggests reducing Bears Ears National Monument
Native American and environmental groups immediately threatened to sue should Trump follow the recommendation. Under the original Obama proclamation, tribes only had an advisory role in managing Bears Ears.
The authorized USA troop level in Afghanistan is about 8,400 but the SecDef said the current number of troops on the ground is a "little under 10,000", possibly because of overlap in troop rotations.
Though the invasion wrested control of most of the country from the Taliban, bin Laden fled the country and went into hiding in Pakistan until captured and killed by US special forces in 2011.
Although Trump has delegated authority for US troop numbers in Afghanistan, the responsibility for America's wars and the men and women who fight in them rests on his shoulders.
A resurgent Taliban coupled with Islamic State militants have challenged US forces in the region and are taking back territory formerly under control of USA and Afghan troops.
ABC News looks at the change and whether anything will change in the USA military posture in Iraq, Syria and Afghanistan. However, the danger continues to evolve and that danger requires a commitment to defeat terrorist organizations that threaten the United States, other nations, and the people of Afghanistan.