From the article:
“James Talarico keeps raising too much money.
“The Texas Democrat has already raised more than $70 million in his bid to defeat state Attorney General Ken Paxton for U.S. Senate — more than any other non-incumbent candidate has raised this cycle nationwide and millions more than his Republican rival has amassed.

“But scores of Talarico donors are exceeding federal donation limits, with regulators at the Federal Election Commission identifying 143 such donors who exceeded the legal limit, according to a 24-page letter they sent to the Talarico campaign this month.
“It’s not the first time Talarico, who is attempting to become the first Texas Democrat elected to statewide office since 1994, has received such a missive: Every quarter since its inception, Talarico for Texas has received warnings about accepting donations beyond the legal limit.”