U.S. Supreme Court continues to block Texas law allowing arrests of illegal immigrants from taking effect.

The law allows Texas police to arrest immigrants suspected of entering the United States illegally. Immigration is also one of the key issues in this year's U.s. presidential election. About 2.7 million illegal immigrants entered the U.S., including about 2.2 million from the southern border in the first 11 months of last year. According to US media reports, 302,000 illegal immigrants enter the United. States from the south in December last year, setting a new monthly high.