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Republican presidential candidate Donald Trump speaks during a campaign event, Monday, April 4, 2016, in La Crosse, Wis. (AP Photo/Paul Sancya)
Republican presidential candidate Donald Trump speaks during a campaign event, Monday, April 4, 2016, in La Crosse, Wis. (AP Photo/Paul Sancya)

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    Secret Trump campaign memo on GOP establishment, media

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Secret Trump campaign memo on GOP establishment, media

Donald Trump warns that a Wisconsin loss could slow his momentum. CNN's Jim Acosta reports.

Secret Trump campaign memo on GOP establishment, media

Donald Trump warns that a Wisconsin loss could slow his momentum. CNN's Jim Acosta reports.