A political committee may not: Use the personal account of the candidate or any responsible officer as the campaign account; Invest campaign funds in any investment vehicles other than those listed in Regulation .03B of this chapter. Use one of the following for making expenditures: Cash, except for authorized disbursements pursuant to Election Law Article, §13-220(c), Annotated Code of Maryland; Credit card; Money order; or Any other method not authorized by law. Use a third-party payment processor as a campaign account or a financial institution.