In Waterloo today, Hillary toured Cedar Valley TechWorks where she
examined a 3-D printer and its products. Later, she held a town hall.

- Democratic
presidential candidate Hillary Clinton looks at a 3D printer as she
tours the Cedar Valley TechWorks, Wednesday, Dec. 9, 2015, in Waterloo,
Iowa. (AP Photo/Charlie Neibergall)

- Democratic
presidential candidate Hillary Clinton listens as she tours the Cedar
Valley TechWorks, Wednesday, Dec. 9, 2015, in Waterloo, Iowa. (AP
Photo/Charlie Neibergall)

- Democratic
presidential candidate Hillary Clinton listens to Andrew Yersin, a
junior at the University of Northern Iowa, as she tours the Cedar Valley
TechWorks, Wednesday, Dec. 9, 2015, in Waterloo, Iowa. (AP
Photo/Charlie Neibergall)

- Democratic
presidential candidate Hillary Clinton looks at some products as she
tours the Cedar Valley TechWorks, Wednesday, Dec. 9, 2015, in Waterloo,
Iowa. (AP Photo/Charlie Neibergall)

- Democratic
presidential candidate Hillary Clinton tours the Cedar Valley
TechWorks, Wednesday, Dec. 9, 2015, in Waterloo, Iowa. (AP Photo/Charlie
Neibergall)

- Democratic
presidential candidate Hillary Clinton looks at products showing her
campaign sign as she tours the Cedar Valley TechWorks, Wednesday, Dec.
9, 2015, in Waterloo, Iowa. (AP Photo/Charlie Neibergall)

- Democratic
presidential candidate Hillary Clinton tours the Cedar Valley
TechWorks, Wednesday, Dec. 9, 2015, in Waterloo, Iowa. (AP Photo/Charlie
Neibergall)

- Democratic
presidential candidate Hillary Clinton tours the Cedar Valley
TechWorks, Wednesday, Dec. 9, 2015, in Waterloo, Iowa. (AP Photo/Charlie
Neibergall)

- U.S.
Democratic presidential candidate Hillary Clinton (C) smiles after
seeing a 3-D printed sign that reads "Welcome Secretary Clinton", while
touring Cedar Valley TechWorks in Waterloo, Iowa December 9, 2015.
REUTERS/Mark Kauzlarich

- U.S.
Democratic presidential candidate Hillary Clinton (C) looks at items
made with a 3-D printer at Cedar Valley TechWorks in Waterloo, Iowa
December 9, 2015. REUTERS/Mark Kauzlarich

- U.S.
Democratic presidential candidate Hillary Clinton (C) tours a 3-D
printing facility at Cedar Valley TechWorks in Waterloo, Iowa December
9, 2015. REUTERS/Mark Kauzlarich

- U.S.
Democratic presidential candidate Hillary Clinton (C) looks at items
made with a 3-D printer at Cedar Valley TechWorks in Waterloo, Iowa
December 9, 2015. REUTERS/Mark Kauzlarich

- U.S.
Democratic presidential candidate Hillary Clinton (R) is educated on
3-D printing at Cedar Valley TechWorks in Waterloo, Iowa December 9,
2015. REUTERS/Mark Kauzlarich

- U.S.
Democratic presidential candidate Hillary Clinton (2nd R) looks at a
3-D printing of her campaign logo at Cedar Valley TechWorks in Waterloo,
Iowa December 9, 2015. REUTERS/Mark Kauzlarich

- Democratic
presidential candidate Hillary Clinton tours the Cedar Valley
TechWorks, Wednesday, Dec. 9, 2015, in Waterloo, Iowa. (AP Photo/Charlie
Neibergall)

- Democratic
presidential candidate Hillary Clinton looks at products showing her
campaign sign as she tours the Cedar Valley TechWorks, Wednesday, Dec.
9, 2015, in Waterloo, Iowa. (AP Photo/Charlie Neibergall)

- Democratic
presidential candidate Hillary Clinton enters a town hall meeting,
Wednesday, Dec. 9, 2015, in Waterloo, Iowa. (AP Photo/Charlie
Neibergall)

- Presidential
candidate Hillary Clinton calls Republican presidential candidate
Donald Trump's plan to block Muslims from entering U.S. "shameful and
dangerous." Rough Cut (no reporter narration).

- A
supporter of U.S. Democratic presidential candidate Hillary Clinton (R)
asks a question during a town hall in Waterloo, Iowa December 9, 2015.
REUTERS/Mark Kauzlarich

- U.S.
Democratic presidential candidate Hillary Clinton (C) greets a
supporter after speaking at a town hall in Waterloo, IA December 9,
2015. REUTERS/Mark Kauzlarich

- Supporters
of U.S. Democratic presidential candidate Hillary Clinton listen as she
speaks during a town hall in Waterloo, Iowa December 9, 2015.
REUTERS/Mark Kauzlarich

- Democratic
presidential candidate Hillary Clinton greets supporters during a town
hall meeting, Wednesday, Dec. 9, 2015, in Waterloo, Iowa. (AP
Photo/Charlie Neibergall)

- Audience
members listen as Democratic presidential candidate Hillary Clinton
speaks during a town hall meeting, Wednesday, Dec. 9, 2015, in Waterloo,
Iowa. (AP Photo/Charlie Neibergall)

- U.S.
Democratic presidential candidate Hillary Clinton speaks during a town
hall in Waterloo, Iowa December 9, 2015. REUTERS/Mark Kauzlarich

- A
supporter (L) of U.S. Democratic presidential candidate Hillary Clinton
(R) leaves after greeting Clinton at a town hall in Waterloo, Iowa
December 9, 2015. REUTERS/Mark Kauzlarich

- U.S.
Democratic presidential candidate Hillary Clinton (C) shakes hands with
supporters after a town hall in Waterloo, Iowa December 9, 2015.
REUTERS/Mark Kauzlarich

- U.S.
Democratic presidential candidate Hillary Clinton pumps her fist after
greeting a supporter at a town hall event in Waterloo, Iowa December 9,
2015. REUTERS/Mark Kauzlarich

- Democratic
presidential candidate Hillary Clinton speaks during a town hall
meeting, Wednesday, Dec. 9, 2015, in Waterloo, Iowa. (AP Photo/Charlie
Neibergall)

- Democratic
presidential candidate Hillary Clinton talks with supporters during a
town hall meeting, Wednesday, Dec. 9, 2015, in Waterloo, Iowa. (AP
Photo/Charlie Neibergall)

- Democratic
presidential candidate Hillary Clinton greets supporters before a town
hall meeting, Wednesday, Dec. 9, 2015, in Waterloo, Iowa. (AP
Photo/Charlie Neibergall)