WASHINGTON — Thirty-seven community groups are jointly asking the Federal Deposit Insurance Corp. to reject Square’s landmark application to become an industrial loan company. The groups, led by the California Reinvestment Coalition, submitted a letter Feb. 19 after the FDIC extended its comment period on Square’s application to form an ILC based in Utah. The letter raises concerns about Square’s business loans and its plan to comply with the Community Reinvestment Act, arguing the current proposal is weak.