Question: Who currently serves as the executive chairman of the company who owns and operates Sam's Town Hotel and Gambling Hall, Shreveport?

Context paragraphs:
Wild Wild West Gambling Hall &amp; Hotel: The Wild Wild West Gambling Hall & Hotel hotel and casino is owned and operated by Station Casinos in Paradise, Nevada.  While the casino and adjoining 260 room hotel are relatively small, the site itself is over 58 acre in size.

Sam's Town Hotel and Gambling Hall: Sam's Town Hotel and Gambling Hall is a casino brand owned by Boyd Gaming, named after its founder, Sam Boyd.  It may refer to:

Boyd Gaming: Boyd Gaming Corporation is an American gaming and hospitality company based in Paradise, Nevada.  The company continues to be run by founder Sam Boyd's family under the management of Sam's son, Bill Boyd (born 1931), who currently serves as the company's executive chairman after retiring as CEO in January 2008.

Vegas Vic: Vegas Vic is a Las Vegas, Nevada neon sign that resembles a cowboy that was erected on the exterior of The Pioneer Club in Las Vegas in 1951.  The sign was a departure in graphic design from typeface based neon signs, to a friendly and welcoming human form of a cowboy.  The sign's human-like abilities of talking and waving its arm constituted an immediate acceptance as the unofficial welcoming sign reproduced thousands of times over the years and all over the world.  The trademark is currently owned by Pioneer Hotel, Inc. which owns and operates the Pioneer Hotel and Gambling Hall in Laughlin, Nevada.  The sign can still be found at 25 E Fremont Street, where he has been since 1951 on the exterior of what used to be The Pioneer Club but is currently a souvenir shop.  Pioneer Hotel, Inc. is the owner of the Pioneer Hotel and Gambling Hall along the Colorado River in Laughlin, Nevada that has a twin of the Vegas Vic image on another large sign referred to as River Rick.

Sam's Town Hotel and Gambling Hall, Tunica: Sam's Town Hotel and Gambling Hall is located in Tunica Resorts, Mississippi.  Officially known as a riverboat casino because the gaming area is situated on a building built on barges that float in a pool of water linked to the nearby Mississippi River as required by state law, the resort in all other aspects resembles its Nevada sibling, except for the atrium.  It includes a 1,600 seat showroom, a 1,070-room hotel, and an RV park.

Frontier gambler: The heyday of gambling in the west lasted from 1850-1910.  Gambling was the number one form of entertainment in the west and nearly everyone living there engaged in it at one time or another.  Cowboys, miners, lumberjacks, businessmen, and lawmen all played games of chance for pleasure and profit.  Whenever a new settlement or camp started one of the first buildings or tents erected would be a gambling hall.  As the settlement grew, these halls would become larger and more elaborate in proportion.  Gaming halls were typically the largest and most ornately decorated buildings in any town and often housed a bar, stage for entertainment, and hotel rooms for guests.  These establishments were a driving force behind the local economy and many towns measured their prosperity by the number of gambling halls and professional gamblers they had.  Towns that were friendly to gaming were typically known to sports as "wide-awake" or "wide-open" for their acceptance of gambling.

Bobby Mehta: Siddharth N. "Bobby" Mehta was former CEO and vice chairman of HSBC North America.  Mehta served as an Advisor of TransUnion since December 31, 2012.  Mehta serves as consultant of TransUnion.  He served the chief executive officer and president of TransUnion from August 2007 to December 31, 2012, and Transunion Financing Corp. until December 31, 2012.  From May 2007 to July 2007, he served as a consultant to the board of directors at TransUnion.  He served as the chief executive officer and president of TransUnion until December 31, 2012.  He served as the chief executive officer of TransUnion LLC.  He served as chairman of the board and chief executive officer of HSBC Finance Corporation from April 2005 to February 2007.  He served as chief executive officer and president of TransUnion LLC from 2007 to 2012.  From 1998 to 2007, he held a variety of positions with HSBC Finance Corporation and HSBC North America Holdings, Inc.  Mehta served as chief executive officer of HSBC North America until February 2007.  Mehta served as consultant of TransUnion since May 2007 until July 2007.  Mehta served as group managing director of HSBC Holdings PLC of HSBC Finance Corp. since April 30, 2005, and its unit chief executive officer since March 2005.  He served as the chief executive of HS BC North America Holdings Inc., of HSBC Finance Corp., from March 2005 to February 15, 2007.  He served as an executive chairman of HSBC Financial Corporation Limited since April 2005 and served as its chief executive officer from April 2005 to February 15, 2007.  He served as the chief executive officer of HSBC Bank USA, N.A. until February 2007.  He served as the chief executive officer of HSBC North America Holdings Inc. since March 2005.  He served as chairman and chief executive officer of HSBC Financial Corp., Ltd.  He oversaw HSBC's global credit card services, its North American consumer lending and mortgage services businesses and its first mortgage operation.  He was also responsible for corporate marketing, strategic planning and corporate development for HSBC North America Holdings Inc. and had responsibility for the strategic management of credit cards throughout the HSBC Group.  Mehta served as group executive of Credit Card Services, Auto Finance and Canada of Household International Inc., since July 2002.  He worked at MasterCard’s U.S. region board since March 2000.  Mehta joined Household International Inc., in 1998.  He served as senior vice president of The Boston Consulting Group in Los Angeles and co-leader of Boston Consulting Group Financial Services Practice in the United States.  Mehta served as a director of Global Board of MasterCard Incorporated since March 17, 2005.  He served as unit chairman of HSBC Holdings PLC and served as its board member since March 2005.  He served as vice chairman and director of HSBC Financial Corporation Limited., (Formerly Household International Inc.).  He has been a director of Avant Credit Corporation since December 18, 2014.  He has been an independent director of The Allstate Corporation since February 19, 2014.  He serves as a member of the advisory board at Core2 Group, Inc.  He has been non-executive independent director at Piramal Enterprises Ltd since April 1, 2013.  He serves on the boards of Datacard, Chicago Public Education Fund, University of Chicago Laboratory Schools, The Economic Club of Chicago, The Field Museum and Myelin Repair Foundation.  He serves as a director of TransUnion Corp. and TransUnion LLC.  He served as a director of MasterCard International Inc. (also known as MasterCard Worldwide) (formerly, MasterCard Inc.), since March 17, 2005.  He served as a director of HSBC Financial Corp.  Ltd.  He has been a director of TransUnion since April 2012.  Mehta serves on the board of international advisors for the Monterey, California, Institute of International Studies and is a member of the Financial Services Roundtable.  He also serves on the board of advisors for the Myelin Repair Foundation.  Mehta holds a Bachelor of Arts in economics from the London School of Economics and Masters of Business Administration from the University of Chicago.  He stepped down as head of the North American unit after the lender raised its forecast for bad loans in the U.S.  He is of Indian descent.

Nevada Landing Hotel and Casino: Nevada Landing was a hotel and casino designed to resemble two riverboats.  It was located in Jean, Nevada, United States, near the California state line, within sight of Interstate 15.  The hotel, owned by MGM Resorts International, had 303 rooms, four restaurants, over 800 slot machines (including video poker), live keno, table games, banquet facilities, and wedding services.  The property was typically marketed with its sister hotel, the Gold Strike Hotel and Gambling Hall, located across the I-15 freeway.

Hotel Nevada and Gambling Hall: Hotel Nevada and Gambling Hall, also known as the Historic Hotel Nevada and Gambling Hall, is a hotel and casino located at 501 Aultman Street in Ely, Nevada.

Sam's Town Hotel and Gambling Hall, Shreveport: Sam's Town Shreveport is a hotel and casino in Shreveport, Louisiana.  It is owned and operated by Boyd Gaming.

Supporting paragraphs: Sam's Town Hotel and Gambling Hall, Shreveport Boyd Gaming
Answer: Bill Boyd