Sentence:  Mr. H<small>UDSPETH</small>. ... I stood here and did all in my power to keep the “<WSD>wetback</WSD>” ... from coming across. And I stand here to-day asking for that. / The C<small>HAIRMAN</small>. ... What is a a “<WSD>wetback</WSD>”? / Mr. H<small>UDSPETH</small>. You have heard a “<WSD>wetback</WSD>” described; he is a fellow that crosses the river surreptitiously. 
Meaning of the word marked with <WSD> tags:  A Mexican or Central American who illegally enters the United States of America from its southern border.