The issue of illegal immigrants during the race for the U.S. Senate is a winner for the GOP in November, because it crosses party lines and it is a serious problem.

There is something happening in Massachusetts that has brought three excellent candidates into the Republican primary to earn the nomination against left wing Democrat U.S. Senator Elizabeth Warren. The mainstream media has Warren among the top Democrats for president, without even considering that she has to first be re-elected by the voters of Massachusetts in 2018.

The issue of illegal immigration is a unifying issue among most Democrats and Republicans in the country. Nobody, except the most radical of libertarians and socialists, opposes a system of legal immigration that helps integrate and regulate the people who want to join the greatest country in the world.

No serious person supports unregulated immigration and sanctuary cities, outside of the left wing of the Democrat party and the bookworms of the Libertarian--and the revolutionaries of the Communist movement.

Senator Warren is caught in a trap and she can't walk out when it comes to illegal immigration.

The key to winning a general election is to have an issue that crosses party lines and generates an emotional response from the voters. Illegal immigration and the crime that some of them bring to America--and Massachusetts in particular--is just the kind of issue that wins general elections.

John Kingston is a successful businessman and a GOP candidate for the U.S. Senate in Massachusetts. He has been running a very effective social media campaign in opposition to sanctuary cities. Kingston has been a social justice advocate his whole adult life, and he understands the way illegal immigration undermines the quality of life of immigrants who have followed the law.

State Representative Geoff Diehl has the support of "America's Sheriff" Tom Hodgson of Bristol County, and that is the gold standard on illegal immigration. President Trump, Attorney General Jeff Sessions, and Homeland Security all confer with Sheriff Hodgson on the issue of illegal immigration.

Diehl also has the public support of Maureen Maloney, the mother of Matthew Denice, who was slaughter by an illegal alien in Massachusetts. Rep. Diehl has also gone down to the southern border to see for himself what the situation is, and how he can make America safe again.

Whoever wins the Republican primary to face Elizabeth Warren will be wise to show how they are for common sense legal immigration, and not for the anarchy of illegal immigration.

The late Matt Denice's mother will be there to keep the politicians honest, regardless of party affiliation.

Chris McCarthy is the host of The Chris McCarthy Show on 1420 WBSM New Bedford. He can be heard weekdays from 10 a.m. to noon. Contact him at chris.mccarthy@townsquaremedia.com and follow him on Twitter @Chris_topher_Mc. The opinions expressed in this commentary are solely those of the author.