First, Syrian state media is alleging a major US build-up and reinforcements sent to "illegitimate bases in Hasakah countryside". The report in Syria's SANA details:
"...that a convoy consisted of 40 trucks loaded with weapons and logistical materials, affiliated to the so-called international coalition have entered in Hasaka countryside via al-Walid illegitimate border crossing with north of Iraq, to reinforce illegitimate bases in the area."
Damascus said further that tons of US heavy equipment was observed going toward building up US positions at Conoco oil and gas field: "Over the past few days, helicopters affiliated to the so-called international coalition have transported logistical equipment and heavy military vehicles to Conoco oil field in northeastern Deir Ezzor countryside, after turning it into military base to reinforce its presence and loot the Syrian resources," SANA wrote further.
This comes at a moment Biden's Syria policy and direction is still largely a big unknown - though it remains that his cabinet looks to include foreign policy hawks - particularly many of the same officials responsible for Obama's both overt and covert interventions in Libya and Syria upon the start of the so-called 'Arab Spring'.
For now President Biden is likely simply to continue Trump's policy of keeping a contingent of American special forces troops stealing occupying Syria's oil and gas fields.
Meanwhile a separate story on the same day as the reported US convoy reinforcements says Russia too is busy building up its forces in an area near where Americans and Turkish patrols are occupying northeast Syria.