The project promises thousands of jobs and large-scale production of advanced artificial intelligence chips.
The 84-year-old Republican lawmaker has been absent from the Senate since June.
The new sanctions target five Cuban entities and eight individuals involved in military procurement from China, Russia, and other countries.
Sherrill is backing a challenger to an incumbent senator who holds the endorsements of most of the Massachusetts Democratic establishment.

Park visitors are asked to monitor themselves for symptoms for up to 21 days.
‘Hopefully, this device will address many of the questions he refused to answer at last week’s hearing,’ Sen. Ron Johnson said.
After nearly 15 years leading the Ivy League school, Paxson cited the need for new leadership to oversee the next planning phase.
Eala’s first career title launches her into the WTA top 20 for the first time.
The task force, led by JD Vance, also set up a new website on Thursday.

About 40 percent of the Team USA Winter Olympians and Paralympians are expected to attend the White House ceremony.
The proposed arrangement would shift a significant portion of commercial traffic into Iranian waters, according to officials in Tehran.
The DOJ said it reached a deal with Connecticut Children’s Medical Center to stop providing ‘gender-affirming care’ to minors.
The president denounced communism and advocated tax cuts for families.
The likelihood of the disease spreading into the United States is considered to be ‘very low,’ according to the CDC.
The AI company and its subsidiary was alleged to have favored temporary visa holders in the green-card recruitment process.
The Southern California resident had ammo in his pocket and a pistol in his car and was apparently monitoring security, authorities say.
The split decision stops Trump administration from clawing back $16 billion in ‘green bank’ funds.
The South African government said it allows expropriation of land if it is in the public interest, but it does not allow property to be taken arbitrarily.
U.S. Attorney Jeanine Pirro ‘folded like an umbrella,’ the president said.
Justice Sonia Sotomayor cleared the way for American terrorism victims to collect damages from attacks in Israel.
‘I want to give them every last chance before decapitation,’ the president said.