When a man identifying himself as Chris Chen reached out this winter to an aide on a House committee focused on threats from China, he came armed with a lucrative offer. 去年冬天，一个自称克里斯·陈的男子联系上了一位供职于专门关注中国威胁的众议院委员会的助理，他带来了一个诱人的提议。 The staff member, Mr. Chen…